Spring Corn Cultivation Technology
October 20 11:01:23, 2018
1, according to local conditions, select good varieties. In the plain hilly areas, Shandan 13, Xiyu 3, Huayu 4th, Zhongdan 32, Chenghai 1 and expedition 808 were promoted; cotton fields interplanting selected dwarf stems, and the short growing period of Shandan 22 and Shandan 51 and 9362; In the suburban areas, fresh food is the main crop, and Zhongma No. 1 and other waxy maize varieties can be cultivated; in Hubei, Hubei Eyu No. 4, 78211, Yandan 19, and Eyu 6 are popularized. 2, full base fertilizer, skillfully applied top dressing. The results of scientific experiments show that when maize yields more than 500 kg per mu, it is necessary to apply 2,500 kg of farmyard fertilizer at the end, 30 kg of ammonium bicarbonate, 40 kg of superphosphate, 8 kg of potassium fertilizer, and 1 kg of zinc sulfate; During the leaf stage, as early as possible to recover Miao Fei, apply 4-5 kg ​​of urea per acre to re-apply the small and weak seedlings to promote balanced growth; when the leaves of 10–11 leaves are unfolded, regain one attacking panicle fertilizer and apply Ammonium bicarbonate 40 per mu. Kilograms, hole dark real; tasseling period make-up attack granules, spray urea 3-4 kilograms per acre. 3, standardized planting, reasonable planting. Corn planting system has net species, intercropping. The net seed box is 120cm wide, and the middle row is planted with two rows of corn, with a row spacing of 40mm, a plant spacing of 25cm, and 4,400 plants per acre; intercropping with wheat rapeseed, a chamber width of 170cm, and interplanting two rows of corn in a reserved row (planting) with two rows of corn at a row spacing of 40cm. , Plant spacing 20-23cm, 3500 per acre; Intercropping with cotton, planting a row at the side of the car, planting about 1200 per acre. In the plain hilly areas, seedlings are planted in mid-March and transplanted in early April; mulching is covered in late March; covered in mid-April in the mountainous regions; areas with high scientific farming levels are promoted to grow seedlings for nutrition, transplanted into the field at the 3rd leaf stage, and then covered. Plastic film. 4, scientific management, nurturing strong seedlings. First, the lack of seedlings to plant, early breeding good seedlings, found that lack of seedlings and early transplanting; Second, the prevention and treatment of pests and diseases, seedlings with baits to prevent tigers and insect pests, such as the cheek mouth period, made of furan Dan fine soil Toxic soil granules, applied to the heart of the corn leaves, lost 3-4 tablets per plant to control corn borers; later applied gangxin to control sheath blight, stripping the base leaves; the third is to support the soil, jointing period combined with top dressing Soil 10cm to promote aerial root growth. Fourth, the Qinggou drains, corn in paddy fields should be well drained to prevent waterlogging; Fifth, auxiliary pollination of corn, cotton intercropping for corn, planting density is low, the pollination rate between the strains of each other should be artificial auxiliary powder , Raise the seed-setting rate and seize high yields.