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在陕西东部特定气候条件下 ,对与棉花优质、高产影响较大的密度、肥料、化控及播期几个农艺措施之间的交互作用进行了深入研究。结果表明 ,在土壤肥力一致的条件下 ,播期及密度是影响地膜棉产量及质量的关键因素 ,此二因素与 N、P、K的平衡施肥及化学调控有机结合是棉花优质、高产的可靠保证 ;筛选出了皮棉产量≥ 1 50 0 kg/hm2最佳农艺措施 ,并进行了反馈试验和大面积示范 ,取得了明显的效果
Under the specific climatic conditions in the eastern part of Shaanxi Province, the interactions between density, fertilizer, chemical control and sowing date of several agronomic practices that have a great influence on the quality and yield of cotton have been studied in depth. The results showed that sowing date and density were the key factors affecting the yield and quality of mulched cotton under the same soil fertility. The balanced combination of fertilization and chemical regulation of N, P and K was the most reliable and reliable cotton The best agronomic measures of lint yield ≥150 0 kg / hm2 were screened, and the feedback test and large-area demonstration were carried out to obtain the obvious effect