Organic food corn cultivation
Lowering Device,Funeral Casket,Funeral Products Flower Medical Equipment Co., Ltd. , http://www.shmedicalequipment.com
November 08 14:01:45, 2018
1. Variety Selection and Seed Treatment Selection The high quality, strong stress resistance, high yield, and the required accumulated temperature for the growing period are 150°C less than the local accumulated annual temperature. Seed purity and cleanliness of not less than 98%, germination rate of not less than 90%, water content not higher than 16%, sown seed purity of 99%, netity of 98%, germination rate of 95%, quality of the country Seed grading standards above two. The seeds were air-dried for 2 to 3 days 15 days before sowing, and 1 to 2 germination tests were conducted 10 days before sowing. The seeds were soaked in water for 8 to 12 hours and then removed by expelling at 20 to 25°C at room temperature. The seeds were turned once every 2 to 3 hours. After the seeds exposed the radicles, they were placed in a cool place and the buds were ready for sowing. Microbial fertilizers can be used for seed dressing, base fertilizers and fertilizers, and they should be used strictly as required. The number of viable bacteria in microbial fertilizers should meet the technical requirements of 4.1 and 4.2 in nt227. Second, sowing the local temperature stability through 5 ~ 6 °C when robbed sowing. The first accumulated temperature zone was planted on April 20-30; the second accumulated temperature zone and the third accumulated temperature zone were sown from April 25th to May 5th and planted by clear seeding or transparent cultivation. For artificial germination and cultivars, the soil with a soil moisture content of less than 20% can be planted in water, and the soil with a soil moisture content higher than 20% can be directly ploughed; the mechanical precision points (holes) on the ridge can be planted. In the ridge block, mechanical precision is used for on-demand phasing. Sowing to achieve consistent shades, cover even soil, timely repression after the sowing of the land plot; sit Shuishui species block after sowing suppression the next day; mechanical sowing along with the description of repression. After the crackdown, the sowing depth reaches 3 to 4cm, and the pressure is not leaked. 1. Seed-clearing: Plant-type astringent varieties with 6-80,000 yuan per hectare of preserved seedlings; luxuriant plant types with 50-53 thousand seedlings per hectare. 2. Permeable cultivation: Plant type astringent varieties, 6.75 to 90,000 plantings per hectare; plant type luxuriant varieties, 5.3 to 55,000 plantings per hectare. Determine the seeding rate according to the planting density and other requirements. Third, fertilization organic fertilizer appearance, technical indicators and heavy metal content, locust egg mortality, E. coli value should be consistent with nt525 4.1, 4.2 technical requirements. Strictly regulate the use of organic fertilizers and the amount of use, and abide by the following principles: Fertilizer amount ≤ seasonal crop absorption/utilization, in principle, pure nitrogen content shall not exceed 170kg/ha; directly applied to the site of action or nearby, shall not pollute the surrounding Crops and the environment; substances strictly prohibited from being used to contaminate the harvested parts; safety intervals are required for application time and harvesting. Fourth, the field management to check the germination situation before emergence, such as the discovery of powder species, bad shoots, to be ready for replanting seedlings or seedlings; after emergence, such as lack of seedlings, to use the reserve seedlings or field surplus seedlings timely water supplement. When 3 to 4 leaves, weak seedlings, diseased seedlings, and seedlings should be removed, and the seedlings should be equidistantly equidistant. After the emergence, deep plowing or shoveling a plow is required. After spade shoveling, spade every 10 to 12 days. Do three shovels three times. Pest control is mainly based on physical and artificial control, and the medicine should meet the technical requirements in ny525. The pest control methods are as follows: 1. Mythimna separata: In the middle-late of June, the control index was reached when there were an average of 100 corns and 50 head armyworms. Manually kill. 2. Corn Borer: The control index is 80 larvae of live insects. 1 High-pressure mercury lamp control: The initial stage of the emergence of the local corn borer adult, from 21:00 to 4:00 the next day, light rain can still turn on the lights. 2 Trichogramma control: The bees were released once or twice in the field at the height of the egg's ovum, and 225,000 bees were released per hectare. Fifth, grass damage control methods 1, the use of manual weeding and mechanical weeding combined method. In mid-August, put the grass in the Qiutian 1-2 times. 2. Planting crops that suppress harmful weeds (such as green manure) and using weeding and fallow technologies to control weeds; 3. Allow use of grass, straw, and biodegradable materials for coverage. At the same time, it is necessary to fight lice and stand stalks to dry the skin; timely release lice to avoid damage to the main stalk. Waxy wax corn corn ear pod drying. Sixth, harvest corn is ripe late harvest. Take stand culm artificial harvest or mechanical harvest. They must not be piled on the ground. They must be harvested separately, transported individually, stored separately, processed separately, and packaged individually to avoid mixing with conventional corn. Drying should be done promptly after harvest. When the grain water content reaches below 20%, the grain is threshed, and above 20%, the grain is thaw after freezing. The threshed grain should be cleaned.