滴灌条件下水肥互作对新疆棉花产量的影响

在田间条件条件下以北疆棉花早熟品种新陆早7号为材料，进行膜下滴灌水脂互作对产量影响的试验。结果表明：1）灌水和施肥各有一域值、一定水肥范围内产量随灌水或施肥量的增加而增加，达到某一值后随灌水或施肥量的增加而降低，其中灌水150m^3/666.67m^2、施纯N10kg/666.67m^2处理的产量最高。2）田间灌水量是限制滴灌棉花产量的主导因素，施肥量次之，同一施氮水平下水分的增产效应大于同一灌水处理下施氮的增产效应。

Influence of Water-Fertilizer Interaction on Cotton Yield under Drip Irrigation Conditions

Under field production conditions,the experiment of effect of water fertilizer interaction on cotton yield under Mulch Drip Irrigation(MDI) was conducted with the mature cotton variety,Xinluzao 7 of North Region of Xinjiang as a stuff.The results showed that irrigation and fertilization have a scope respectively,yield in a certain water and fertilizers increased with the increase of water and fertilizer quantities.But yield dropped when a certain quantity of water and fertilizer reached a certain degree,and yield in the W 150 m+3/666.67 m+2 and N 10 kg/666.67 m+2 reached the top.The most important factor of controlling cotton yield under MDI was field irrigation. The yield increasing effect of water on the same fertilization level is higher than that of fertilizer on the same irrigation level.