Tian Lingjiao cultivation technology
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November 18 16:07:41, 2018
Water chestnuts, belonging to the genus Dendrobidae, are annual aquatic vegetation plants. Its meat is delicious and nutritious, and it can be used as fruit and vegetable as well as grain, and it is suitable for processing flour or making cakes and other raw materials. Qingtian County has been planting rice fields with water chestnuts since 1996. Due to the high market sales prices and good sales, while the water chestnut planting has the characteristics of strong adaptability and easy cultivation, Qingtian County in Shankou Town, Hecheng Town, Zhangdan Township, Dongyuan Town this year. Such as promotion of rice field water chestnut cultivation area of ​​500 mu, mu income of more than 1300 yuan. The cultivation techniques of the rice field water chestnuts are as follows: 1. Variety selection Select high-yield, strong adaptability and high-temperature resistant two-cornered Lingling. The variety shows a growth period of about 180 days, and the yield per acre is 400-500 kg. The fruit shape is large and the two corners are coarse. Long bends, good quality, and high starch content make it difficult for fruit stems to fall off during ripening. 2, sowing 2.1 sowing season when the weather is stable above 12 °C sowing, generally before and after the Qingming sowing is appropriate. 2.2 Live seedlings should be fertilized for soil preparation 15 days before planting. In the field, the height of the field should be 40 cm. The field density should be about 1.52 meters. The seeding rate should be 10-15 kilograms per acre, and the shallow water should be kept 1-2 inches after sowing. After the seedlings emerged, they gradually deepened the water layer. 2.3 seedlings before transplanting sowing seedbed preparation, according to 10:1 per acre field preparation seedbed, bed width 1.2 meters, ditch depth 35 cm, after sowing covered fine mud, keep the soil moist, until seedlings long 3 leaves When one heart is in, add half a scoop of human feces to each bucket of water to make it grow. This will help grow strong seedlings. When the temperature reaches 15°C or more, it can be transplanted. Normally, the seedlings are transplanted on the same day. 3, field management 3.1 Daejeon Shiji fertilizer manure 300-350 kg per mu before the site preparation, decomposed bar fertilizer 750 kg, 3 kg of potassium fertilizer, superphosphate 40 kg. 3.2 Fertilizer The first flower begins to top-dressing, usually in the sunny morning at 8 to 9 o'clock or at 5-6 o'clock in the afternoon, foliar fertilizer 0.2% urea, 0.2% potassium dihydrogen phosphate is sprayed. Once every 10 days, about 2-3 times. 3.3 Slurry management Water chestnut field should pay attention to changing the water frequently, keep the water layer 20-30 centimeters, and the high temperature of the water layer in the summer should be kept more than 30 centimeters. 3.4 Weed Control Water chestnuts are sensitive to herbicides, and if necessary, weeds are hand-held. 3.5 Diseases and Insect Pest Control The major pests are Hymenoptera, Scar aphids, and Hymenolepis spp., In particular, insect pests increase in the early summer after foggy and rainy days. Generally, 80% of insecticides are used for pesticide control, and 400 times of insecticides are used, and 18% of insecticides are doubled. Times, if found, aphids were sprayed with 10% imidacloprid 2000. There are mainly diamondbacks, white rot and so on. They are prone to occur when the humidity is high and humid. In the initial stage, they should be removed in time, dried, burned or buried in the diseased leaves. The diseased fields are sprayed with 50% thiophanate-methyl 1000 times solution. From the beginning of the flowering period, spraying once every 7 days, even spraying 2-3 times. 4. Harvesting begins before and after the white dew, harvesting once every 5-7 days, and harvesting when the frost falls. Anti-jacketing when harvesting, otherwise the plants are easy to be injured, and old Lingyi falls into the water. 5, leave the species 5.1 choose to stay with the inherent characteristics of this species, the shape is neat and tidy, dark skin, no pests and diseases, skin thin flesh, full and mature, filled with water to remove floating fruit, leaving Shen fruit for the species. 5.2 During the winter of storage, the loss is generally about 30%. In order to meet the amount of seed used for a certain sown area, the loss should be estimated as a reserve. Ling seeds are not dry and should be stored in water. They should be packed in woven bags and fixed by ropes. The blocks with hot spring water should be sunk into the water for winter. Keep the flow of the fields and do not freeze the seeds. Wash and sow the next spring. (Source: Sichuan Agricultural Economy Network)