江汉平原地区露地春毛豆—秋红菜薹绿色高效轮作技术OA

The green and efficient cultivation techniques for the spring Glycine max-autumn Brassica rapa rotation system was summarized in the Jianghan Plain area.In this model,spring Glycine max was direct-seeded in open fields in mid-March and harvested from June to July,while autumn Brassica rapa was nursery-raised in mid-July,transplanted in mid-August,and harvested continuously from September to February of the following year.The spring Glycine max cultivation techniques include:selecting cold-tolerant,disease-resistant,high-quality varieties(Taiwan 75-3);choosing fields with non-legume and non-cruciferous previous crops;applying sufficient decomposed organic fertilizer and compound fertilizer as base fertilizer;finely preparing land and constructing deep-trench high-ridges;seeding precisely using narrow-ridge double-row or wide-ridge four-row methods after seed dressing with chemicals;adhering to the"dry flowers,moist pods"water management principle during field management,with scientific topdressing at the seedling,initial flowering,and pod-filling stages;comprehensive use of agricultural methods(selecting disease resistant varieties,reasonable planting),physical methods(hanging insect traps),and chemical methods(20%imidacloprid,200 g/L chlorantraniliprole)to control pests and diseases such as aphids,pod borers,and rust;pods were harvested when they were plump and bright green,and plant residues were either treated harmlessly or returned to the field.The autumn Brassica rapa cultivation techniques include:selecting suitable varieties(Jingyoulianghong series);nursery-raising under rain-shelter and shading in summer;applying sufficient base fertilizer after Glycine max straw incorporation,followed by high-ridge transplanting;topdressing in stages combined with irrigation after seedling recovery,at bud emergence,and during stem harvesting;implementing integrated measures to control diseases and pests such as soft rot,downy mildew,aphids,and flea beetles;harvesting when the main stem reaches 30 cm;and standardizing post-harvest bundling,pre-cooling,and packaging to maintain product quality.This rotation model achieves year-round high yield,improved quality and efficiency,and sustainable soil use of Glycine max and Brassica rapa,provides a reference for efficient legume and vegetable production in similar ecological regions.