Early-ripe cultivation method for directly seeding cotton in later-crop oilseed rapes

Abstract

The invention discloses an early-ripe cultivation method for directly seeding cotton in later-crop oilseed rapes. The method comprises the following steps of 1 land preparing, 2 variety selecting, 3 seeding and seeding density determining, 4 chemical regulating, 5 irrigating and 6 pinching. The early-ripe cultivation method for directly seeding the cotton in the later-crop oilseed rapes has the following advantages that the boll number per hole, that is, the boll number per mu is guaranteed by increasing the planting density, and therefore the condition that the yield is decreased is avoided; late seeding and early ripening are achieved, the irrigating frequency is decreased by one, and water is saved by 250 cubes per mu; pruning and a thinning and final thinning technology are omitted, the labor cost is reduced by 20 yuan per mu, the cotton planting comparative benefits are increased, and the current light and simple cotton cultivation requirements are met; through a pinching technology in the bud stage, vegetative growth is slowed, nutrient accumulation in reproductive organs is accelerated, bud and boll growth and development needs are supplemented, and early ripening is promoted.

Description

technical field [0001] The invention relates to the technical field of crop planting and cultivation, in particular to an early-maturing cultivation method for direct-seeded cotton after rapeseed. Background technique [0002] With the popularization and application of the high-efficiency planting mode and technology of multi-planting cotton after winter rapeseed in the cotton area of ​​Gansu Hexi Corridor, the proportion of multi-planting cotton after winter rapeseed has increased. While realizing the annual coverage of the farmland, the multiple cropping index is increased, the synergistic increase of oil cotton production is achieved, the ecological benefit and economic benefit are simultaneously improved, and the contradiction between cotton and oil competition for land is solved; There is a seasonal contradiction between the mature period and the sowing period of conventional cotton: the harvest period of winter rapeseed is generally in late May, and the sowing period o...

AI Technical Summary

Problems solved by technology

[0005] After a batch of winter rape varieties resistant to minus 32°C extreme low temperature were bred, it solved the problem that winter rape in the northern region was difficult to survive the winter, changed the one-year cropping system in the northern cotton area to two-year or two-year three-crop system, and maximized land use efficiency and economic benefits, greatly reducing the damage of plant diseases and insect pests in continuous cropping cotton fields, and reducing wind erosion of bare farmland during the winter fallow period, with obvious ecological benefits