在灌漠土上设置田间试验,结果表明:棉花膜下滴灌施用氮肥(尿素),按苗期1次(5%),蕾期2次(25%),花铃期4次(70%)施入,可满足棉花生长需要.本文建立了籽棉(y)与滴灌棉田N量(x)的肥料效应回归方程y=3271.82+14.46x-0.0312x2(R=0.9604*),Nmax=231.4kg hm-2,Ymax=4897.2 kg hm-2.
Fertilization Model for Cotton undert the Condition of Drip Irrigation and Plastic Mulch