摘要
研究了不同水分条件下保水剂对小麦增产的效应,结果表明,施用保水剂可以增加小麦穗长和穗粒数、提高千粒重,从而提高小麦产量。不灌水条件下施用保水剂可增产8.42%~22.75%,以60kg/hm^2和45kg/hm^2处理较好;灌一水条件下施用保水剂可增产10,86%~19.86%,以45kg/hm^2处理最好;灌二水条件下施用保水剂可增产10.79%~18.42%。水分利用率在不同处理间也有很大差异,不灌水条件下施用保水剂降水利用率分别提高1.11~2.99kg/(mm·hm^2),以60kg/hm^2处理提高最多;灌一水条件下施用保水剂时灌水利用率分别增加0.063~0.206kg/m^3,以30kg/hm^2处理最高;灌二水条件下施用保水剂灌水利用率分别增加0.029~0.192kg/m^3,以90kg/hm^2处理提高最多。说明保水剂对旱地小麦产量和水分利用率的提高具有积极效果,并表现为水分匮乏时显著,充分时减弱的特点。
On the study of nutrient water-retaining agent on wheat production and water utilization under different moisture conditions, the results showed nutrient water-retaining agent could improve wheat spike length,spike grains, 1 000 grain weight and yield. The yield of nutrient water-retaining agent treatments could be increased 8.42 % - 22.75 % under no irrigated condition ,the treatment of 60 kg/ha was the best one. The yield of nutrient water-retaining agent treatments could be increased 10.86% - 19.86%under once irrigated condition ,the treatment of 45 kg/ha was the best one .The yield of nutrient water-retaining agent treatments could be increased 10.79 % - 18.42 % under twice-irrigated condition, the difference was reduced among the treatments of nutrient water-retaining agent. However, the efficiency of precipitation and irrigated water utilization also had notable difference among different volume of treatment nutrient water-retaining agent treatments under different moisture conditions, which had the same tendency to the production increased. In a word, the application of nutrient water-retaining agent had a positive role on wheat production and the efficiency of water utilization.
出处
《华北农学报》
CSCD
北大核心
2007年第5期40-42,共3页
Acta Agriculturae Boreali-Sinica
基金
国家"863"项目(2002AA2Z4291)
河南省重点科技攻关项目(0423102600)
关键词
保水剂
小麦
增产效应
水分利用率
Nutrient water-retaining agent
Wheat
Increase production effect
Efficiency of water utilization