1. Adapt to local conditions and select good varieties. In the plain hilly area, the promotion of Yandan 13, Xiyu No. 3, with Huayu No. 4, Zhongdan 32, Chenghai No. 1, and Expedition 808; the selection of cotton fields for dwarf poles and short growth period 22, 51, 9362; In the suburbs, fresh food is the mainstay, and corn varieties such as Zhonghao No. 1 can be planted; Eyu No. 4, 78211, Qidan 19 and Eyu 6 are promoted in western Hubei.
2, apply enough base fertilizer, skillfully apply top dressing. Scientific test results, corn yield more than 500 kg per mu, need to apply about 2500 kg of farmyard manure, 30 kg of ammonium bicarbonate, 40 kg of superphosphate, 8 kg of potassium fertilizer, 1 kg of zinc sulfate; top dressing Miao Qiao Shi 5-6 In the leaf stage, early attacking seedling fertilizer, applying 4-5 kg ​​of urea per acre, reapplying small and weak seedlings to promote balanced growth; when 10-11 leaves are unfolded, re-chasing an attacking panicle fertilizer, applying ammonium bicarbonate per acre 40 In kilograms, the hole is dull; in the tasseling period, the application of the attacking fertilizer is applied, and 3-4 kg of urea per acre is sprayed.
3. Standard planting and rational planting. The corn planting system has a net species and intercropping. The net corn cob is 120cm wide, and two rows of corn are planted in the middle of the car. The row spacing is 40mm, the plant spacing is 25cm, and 4400 plants per mu. With the wheat rapeseed interplanting, the width of the car is 170cm, and two rows of corn are planted in the middle of the reserved row. The row spacing is 40cm. The plant spacing is 20-23cm, 3500 plants per mu; intercropping with cotton, planting a row at the side of the box, planting about 1200 plants per acre. In the plain hilly area, seedlings are planted in mid-March, transplanted in early April; mulching is planted in late March, and mountainous areas are covered in mid-April; areas with high levels of scientific farming are used to promote nutrient seedlings, 3 leaf stage transplanting fields, and then cover Mulch.
4. Scientific management and cultivation of strong seedlings. First, lack of seedlings to replant, early breeding of ready seedlings, found that lack of seedlings and early transplanting; second, the prevention and control of pests and diseases, seedlings with poison baits to control tigers and insect pests, such as 剌 å£ mouth period, made with furandan fine soil Toxic soil granules, applied to corn heart leaves, 3-4 grains per plant, control corn aphids; late Jingjingmycin to control sheath blight, stripping base leaves; third is to support soil, jointing stage combined with top dressing Soil 10cm to promote the growth of aerial roots. The fourth is to clear the ditch, the paddy field corn should do the ditch drainage to prevent waterlogging; the fifth is the auxiliary pollination corn, the cotton intercropping corn, the planting density is small, the mutual pollination rate between the plants is low, the male silking period should be artificial artificial powder Improve the seed setting rate and capture high yields.
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