棉花种植密度与产量形成的关系

[目的]明确棉花种植密度与产量形成的关系,为新疆棉花高产栽培技术提供理论和参考依据.[方法]以影响棉花产量的主要因子种植密度为处理,研究棉花生育进程,各生育期根、茎、叶的干物质,叶面积指数和叶片光合速率,以及产量及其构成的变化规律.[结果]棉田中等肥力膜下滴灌条件下棉花栽培的最佳收获密度为1.20×104株/667 m2,播种密度为1.40×104株/667m2.[结论]北疆中等肥力棉田中等密度栽培棉花具有较高的产量.

Relation of Yield Forming and Planting Density in Cotton

【Objective】The present research commentating relation of yield forming and planting density in cotton was carried out to effectively provide the useful information and academic base for high yield planting in Xinjiang.【Method】 The main factors affecting cotton production are the processing planting density,so this research studied their changing rule by analyzing cotton growing process,the dry matter accumulation of cotton roots,stems and leaves at various growth stages,the leaf area index,leaf photosynthetic rate,and the yield components in cotton.【Result】In cultivation medium fertility,the drip irrigation cotton had the highest yield in the number of harvested density of 12,000 per 667 m2,and planting density was 14,000 per 667 m2.【Conclusion】 It was indicated that the cultivation of the middle population density would obtain the maximal yield in cotton farmland of the medium fertility.