(1) Single-season rice area in the northeast cold region. Including all of Heilongjiang Province and some counties in Hulunbeier City, Inner Mongolia Autonomous Region.

1. Fertilization management principles

(1) According to the results of soil testing and formula fertilization, the amount of nitrogen and phosphorus fertilizer is appropriately reduced, and the amount of potassium fertilizer is optimized.

(2) Reduce the amount and proportion of base fertilizer and nitrogen, increase the proportion of panicle fertilizer, and make the ratio of ear fertilizer to nitrogen at jointing stage reach about 30%.

(3) Early application of green fertilizer to promote early splitting, and return to green fertilizer within 3 days after transplanting.

(4) Appropriate supplementation of trace elements according to soil nutrient status.

(5) Calcium, magnesium and phosphate fertilizers should be applied to the acidic sites, and the alkaline fertilizers should be used less or without urea as top dressing. Ammonium sulfate can be used as top dressing.

(6) After the application of the base fertilizer, the rotary tillage is carried out to achieve full-layer fertilization; the water-saving irrigation technique is adopted, and the field is applied for about 3 days before fertilization, and the fertilization takes water with nitrogen; in the conditional areas, the lateral body fertilization and transplanting can be integrated.

2. Fertilization advice

(1) Recommended 13-19-13 (N-P2O5-K2O) or similar formula.

(2) The production level is 450-550 kg/mu, and the recommended dosage of formula fertilizer is 18-23 kg/mu. The fertilizer is divided into 5-7 and 3 kg/mu respectively.

(3) The production level is 550 kg/mu or more, and the recommended dosage of formula fertilizer is 23-29 kg/mu. The fertilizer is divided into 5-8, 3-4 kg/mu, and the grain fertilizer is applied to the potassium chloride. - 3 kg / mu.

(4) The production level is below 450 kg/mu, and the recommended dosage of formula fertilizer is 14-18 kg/mu. The fertilizer is divided into 4-5 and 2-3 kg/mu, respectively.

(2) Single-season rice area in Jidong, Northeast China. It includes all of Jilin and Liaoning provinces, as well as some counties of Chifeng, Tongliao and Xing'an League in Inner Mongolia Autonomous Region.

Fertilization principle

(1) Determine the amount of reasonable fertilizer in the plot according to the results of soil testing and fertilization.

(2) Control the total amount of nitrogen fertilizer, rationally allocate the period of nitrogen fertilizer application, and appropriately increase the proportion of panicle fertilizer.

(3) Rational application of phosphate fertilizer and potassium fertilizer, and appropriate supplementation of medium and trace element fertilizers.

(4) Increase the amount of organic fertilizer applied.

2. Fertilization advice

(1) Recommended 15-16-14 (N-P2O5-K2O) or similar formula.

(2) The production level is 500-600 kg/mu, and the recommended dosage of formula fertilizer is 24-28 kg/mu. The fertilizer is divided into 8-9, 4-5 kg/mu.

(3) The production level is 600 kg/mu or more, and the recommended dosage of formula fertilizer is 28-33 kg/mu. The fertilizer is divided into 5-11, 5 kg/mu, and the spiked grain fertilizer is applied to the potassium chloride 1-3. Kg/mu.

(4) The production level is below 500 kg/mu, and the recommended dosage of formula fertilizer is 19-24 kg/mu. The fertilizer is divided into 6-8 and 3-4 kg/mu respectively. Zinc-deficient or cold-impregnated field-based zinc sulphate 1-2 kg / mu, silicon fertilizer 15-20 kg / mu.

(3) Single-season rice area on the upper reaches of the Yangtze River. Including the eastern part of Sichuan Province, all of Chongqing, southwestern Shaanxi, some counties in northern Guizhou, and western Hubei.

Fertilization principle

(1) Add organic fertilizer and promote the combination of organic and inorganic.

(2) Adjust the ratio of base fertilizer to top dressing and reduce the amount of nitrogen fertilizer used in the previous period.

(3) Deep application of base fertilizer, topdressing "with water with nitrogen".

(4) Appropriately reduce the amount of phosphorus fertilizer in rice in the oil rice field.

(5) Select medium and low concentration phosphate fertilizers, such as calcium magnesium phosphate fertilizer and calcium, etc.; potassium fertilizer to choose potassium chloride.

(6) In a field with a soil pH of 5.5 or less, a silicon-containing alkaline fertilizer or a base applied lime is suitably applied.

2. Fertilization advice

(1) The production level is below 450 kg/mu, the nitrogen fertilizer (N) dosage is 6-8 kg/mu; the production level is 450-550 kg/mu, the nitrogen fertilizer (N) dosage is 8-10 kg/mu; the production level is 550-650 kg. / mu, nitrogen fertilizer (N) dosage 10-12 kg / mu; production level 650 kg / mu or more, nitrogen fertilizer (N) dosage 12-14 kg / mu. Phosphate fertilizer (P2O5) 5-7 kg / mu, potash fertilizer (K2O) 4-6 kg / mu.

(2) Nitrogen fertilizer base fertilizer accounts for 35%-55%, manure fertilizer accounts for 20%-30%, panicle fertilizer accounts for 25%-35%; organic fertilizer and phosphate fertilizer are all applied; potassium fertilizer base fertilizer (60%-70%) and Spike fertilizer (30%-40%) was applied twice.

(3) In the zinc-deficient and boron-deficient areas, apply appropriate amount of zinc fertilizer and boron fertilizer; apply 30-50 kg of siliceous alkaline fertilizer or quicklime per acre in the soil with strong acidity.

(4) Single and double-season rice areas in the middle reaches of the Yangtze River. It includes the central and eastern parts of Hubei Province, the northeastern part of Hunan Province, the northern part of Jiangxi Province, and all of Anhui Province.

Fertilization principle

(1) Appropriately reduce the total amount of nitrogen fertilizer and increase the proportion of panicle fertilizer.

(2) Deep application of base fertilizer, topdressing "with water with nitrogen".

(3) Phosphate fertilizer is preferred for calcium or calcium magnesium phosphate.

(4) Add organic fertilizer and promote straw returning.

2. Fertilization advice

(1) The production level is below 350 kg/mu, the nitrogen fertilizer (N) dosage is 6-7 kg/mu; the production level is 350-450 kg/mu, the nitrogen fertilizer (N) dosage is 7-8 kg/mu; the production level is 450-550 kg. / mu, nitrogen fertilizer (N) dosage 8-10 kg / mu; production level 550 kg / acre, nitrogen fertilizer (N) dosage 10-12 kg / mu. Phosphate fertilizer (P2O5) 4-7 kg / mu, potash fertilizer (K2O) 4-8 kg / mu.

(2) 50%-60% of nitrogen fertilizer as base fertilizer, 20%-25% as manure, 10%-15% as panicle fertilizer; phosphate fertilizer as all base fertilizer; 50%-60% of potassium fertilizer as base fertilizer, 40%-50% as Spike fertilizer; in the zinc-deficient area, the appropriate amount of zinc fertilizer; appropriate base application of silicon fertilizer.

(3) The amount of base fertilizer can be appropriately reduced by applying organic fertilizer or planting green manure. In the land where straw is returned to the field, the amount of potassium fertilizer can be reduced by about 30%.

(5) Single-season rice areas in the lower reaches of the Yangtze River. Including all of Jiangsu, northern Zhejiang.

Fertilization principle

(1) Add organic fertilizer and combine organic and inorganic.

(2) Control the total amount of nitrogen fertilizer, adjust the proportion of base fertilizer and top dressing, and reduce the amount of nitrogen fertilizer in the previous period.

(3) Deep application of base fertilizer, topdressing "with water with nitrogen".

(4) Oil (wheat) rice round for field, appropriate reduction of rice phosphate fertilizer.

2. Fertilization advice

(1) The production level is below 500 kg/mu, the nitrogen fertilizer (N) dosage is 8-10 kg/mu; the production level is 500-600 kg/mu, the nitrogen fertilizer (N) dosage is 10-12 kg/mu; the production level is 600 kg/mu. Above, the amount of nitrogen fertilizer (N) is 12-15 kg/mu. Phosphate fertilizer (P2O5) 5-6 kg / mu; potassium fertilizer (K2O) 6-8 kg / mu.

(2) Nitrogen fertilizer base fertilizer accounts for 40%-50%, manure fertilizer accounts for 20%-30%, panicle fertilizer accounts for 20%-30%; organic fertilizer and phosphate fertilizer all base application; potassium fertilizer base fertilizer (60%-70%) and Spike fertilizer (30%-40%) was applied twice. The zinc-deficient soil is applied with 1 kg of zinc sulfate per acre; suitable base is applied with silicon fertilizer.

(3) The amount of base fertilizer can be appropriately reduced by applying organic fertilizer or planting green manure.

(6) Single and double-season rice areas in the hilly mountains of the south of the Yangtze River. Including the south-central part of Hunan Province, southeastern Jiangxi Province, southern Zhejiang Province, north central Fujian Province, northern Guangdong Province.

Fertilization principle

(1) Determine the target yield according to soil fertility, control the total amount of nitrogen fertilizer, balance application of nitrogen, phosphorus and potassium, and combine organic and inorganic.

(2) Deep application of base fertilizer, topdressing "with water with nitrogen".

(3) Phosphate fertilizer preferentially choose calcium magnesium phosphate fertilizer or calcium.

(4) Appropriate application of soil amendments or based limes to acidic soils.

2. Fertilization advice

(1) Under the condition of about 500 kg per mu, nitrogen fertilizer (N) 10-13 kg/mu, phosphate fertilizer (P2O5) 3-4 kg/mu; potassium fertilizer (K2O) 8-10 kg/mu.

(2) Nitrogen application in divided applications, base fertilizer accounts for 35%-50%, tiller fertilizer accounts for 25%-35%, panicle fertilizer accounts for 20%-25%, tiller fertilizer is appropriately delayed; phosphate fertilizer is applied at all; potassium fertilizer is 50% as base fertilizer 50% as the ear fertilizer.

(3) It is recommended to return the straw to the field or increase the application of organic fertilizer. For the plots where the straw is returned to the field, the amount of potassium fertilizer can be reduced by 30%; for the field where organic fertilizer is applied, the amount of base fertilizer can be appropriately reduced.

(4) On the soil with strong acidity, 40-50 kg of siliceous alkaline fertilizer or quicklime should be applied per acre.

(7) Double-season early rice in the hills of the South China Plain. Including the southern part of Guangxi Zhuang Autonomous Region, southern Guangdong Province, Hainan Province, southeast of Fujian Province.

Fertilization principle

(1) Control the total amount of nitrogen fertilizer, adjust the base and the proportion of chasing, reduce the amount of nitrogen fertilizer in the early stage, and implement the shift of nitrogen fertilizer.

(2) Deep application of base fertilizer, topdressing "with water with nitrogen".

(3) Phosphate fertilizer preferentially choose calcium magnesium phosphate fertilizer or calcium.

(4) In a field with a soil pH of 5.5 or less, a silicon-containing alkaline fertilizer or a base applied lime is suitably applied.

(5) Supplementation of trace element zinc fertilizer in zinc-deficient fields, submerged rice fields and low-temperature and widowed areas.

2. Fertilization advice

(1) Recommended 18-12-16 (N-P2O5-K2O) or similar formula.

(2) The yield per mu is 350-450 kg, the recommended dosage of formula fertilizer is 26-33 kg/mu, the base fertilizer is 13-20 kg/mu, and the split fertilizer and panicle fertilizer are respectively applied 5-8 kg/mu, 3-5 kg/ mu.

(3) The yield per mu is 450-550 kg, the recommended dosage of formula fertilizer is 33-41 kg/mu, the base fertilizer is 17-24 kg/mu, and the split fertilizer and panicle fertilizer are respectively applied for 7-10 kg/mu, 4-7 kg/ mu.

(4) The yield per mu is more than 550 kg, the recommended dosage of formula fertilizer is 41-48 kg/mu, the base fertilizer is 22-29 kg/mu, and the split fertilizer and panicle fertilizer are respectively applied for 8-11 kg/mu, 5-8 kg/mu. .

(5) The yield per mu is below 350 kg, the recommended dosage of formula fertilizer is 20-25 kg/mu, the base fertilizer is 11-14 kg/mu, and the split fertilizer and panicle fertilizer are respectively applied 4-6 kg/mu, 3-5 kg/mu. .

(8) Single-season rice area in the southwest plateau mountains. Including all of Yunnan Province, southwest of Sichuan Province, most of Guizhou Province, western Hunan Province, northern Guangxi Zhuang Autonomous Region.

Fertilization principle

(1) Add organic fertilizer, implement straw returning, and combine organic and inorganic.

(2) Adjust the ratio of base fertilizer to top dressing and reduce the amount of nitrogen fertilizer used in the previous period.

(3) In the case of phosphorus-deficient soil, phosphate fertilizer should be added appropriately; it is best to choose calcium, magnesium and phosphorus fertilizers.

(4) Rice fields with low potassium supply capacity, pay attention to potassium supplementation in the late growth stage of rice.

(5) In a field with a soil pH of 5.5 or less, an alkaline soil conditioner containing silicon calcium or a base applied lime is suitably applied.

(6) Fertilizer application combined with high-yield and high-quality cultivation techniques.

2. Fertilization advice

(1) Recommended 17-13-15 (N-P2O5-K2O) or similar formula.

(2) The production level is 400-500 kg/mu, and the recommended dosage of formula fertilizer is 26-33 kg/mu. The fertilizer is divided into 6-6, 4-5 kg/mu, respectively.

(3) The production level is 500-600 kg/mu, the recommended dosage of formula fertilizer is 33-39 kg/mu, and the fertilizer is divided into 5-8, 5-6 kg/mu, and the grain fertilizer is applied to the potassium chloride. 1-2 kg / mu.

(4) The production level is 600 kg/mu or more, and the recommended dosage of formula fertilizer is 39-46 kg/mu. The fertilizer is divided into 8-10, 6-7 kg/mu, and the grain fertilizer is applied to the potassium chloride. - 4 kg / mu.

(5) The production level is below 400 kg/mu, and the recommended dosage of formula fertilizer is 20-26 kg/mu. The fertilizer is divided into 4-6 and 3-4 kg/mu, respectively.

(6) In the zinc-deficient area, apply 1-2 kg of zinc sulfate per acre; apply 30-50 kg of siliceous alkaline fertilizer or quicklime per acre in the field with low soil pH. (Source: Ministry of Agriculture)

This article URL: 2016 spring rice science fertilization technical guidance

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