膜下滴灌条件水、氮、密度耦合效应对棉花产量的影响

[目的]研究膜下滴灌灌水量、施氮量、密度耦合效应对杂交棉生长的影响.[方法]通过田间试验,设置8个水、氮、密度处理组合研究不同处理对棉花生长和产量的影响.[结果]灌水量对棉花生产影响最大,其次是施氮量和密度,高的水、氮条件下棉花干重和产量都有所增加,但收获率有很明显的下降.[结论]水氮增加以后,棉花生长旺盛,但容易旺长,因此在生产中增加水肥投入获高产要慎重.

Effects of Water, Nitrogen and Density Coupling on the Yield of Hybrid Cotton Under Film Drip Irrigation

【Objective】Effect of water, nitrogen and density coupling on the growth of hybrid cotton under film drip irrigation were studied.【Method】A field experiment was carried out to study the growth and output of cotton treated by 8 test schemes of different water,nitrogen and density.【Result】The results showed that the effect of water quantity on cotton yield was the most significant,the next was nitrogen and density.The yield of cotton was increated along with increasing of water and nitrogen quantity followed by nitrogen quantity and planting density.【Conclusion】 These results suggested that water and nitrogen in field farming should be used cautiously.