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优化群体质量,夺取棉花丰收的技术关键可概括为16字:“扩行降株,增肥补钾,运筹肥水,早发抗灾”。1扩行降株,是优化群体质量的前提 近几年我市各地做了扩行降株的尝试,对减少脱落,增龄增重具有显著效果,一般增产10～15％。扩行降株要根据土壤地力、施肥量、培管水平等因地制宜,使种植组合扩大到1.5～1.65m,组合小于1.3m的茬口可采取“四改三”的办法扩大行距,株距一般24～26crn,每亩栽3000～3500株。
Optimization of the quality of the community, to seize the technical key to cotton harvest can be summarized as 16 words: “expansion of strains reduction, fertilizer potassium, fertilizer operation, early disaster relief.” 1 expansion of strains, is to optimize the quality of the premise In recent years, extension of the city made an extension of the attempt to reduce the shedding, age gain weight has a significant effect, the general increase of 10 to 15%. Expansion and extension of strains should be based on soil fertility, amount of fertilizer, training levels and other local conditions, the planting portfolio expanded to 1.5 ~ 1.65m, combined less than 1.3m stubble can take “four change three” way to expand the line spacing, spacing generally 24 ~ 26crn, planted 3000 ~ 3500 plants per mu.