土壤改良剂节水增产效应的田间试验研究

采用田间试验,探讨了施用土壤改良剂对冬小麦的产量及水肥利用效率的影响。结果表明,施加土壤改良剂能降低作物生育期耗水量,提高冬小麦的产量,增加水肥利用效率。在不灌水条件下,施加土壤改良剂1500kg/hm2,能够使冬小麦较对照增产15%,水分利用效率(WUE)提高了21.65%,磷肥利用效率(PUE)较单施磷肥增加2.92%。在灌水33.3mm的条件下,施加土壤改良剂较对照可增产28.57%,将土壤改良剂与磷肥混施增产可达到42.86%。而且,PUE较单施磷肥增加了11.11%,WUE达到25.06kg/(hm2·mm)。

A field experiment was carried out to study the effects of the application of a new soil conditioner to grain yield, water use efficiency (WUE), and phosphorus fertilizer use efficiency (PUE) of winter wheat. Results showed that the application of the new soil conditioner could improve grain yield, WUE, and PUE. When the new soil conditioner was used at 1 500 kg/hm2 in a wheat field, grain yield and WUE were increased by 15 % and 21.65%, respectively. PUE was 2.92 % higher than that under single application...