中国水土保持科学2012，Vol.10Issue(6)：58-63,6.
不同水分条件下保水剂对土壤持水与供水能力的影响
Effects of water-retaining agent onsoil water retention and supplying water under different water conditions
摘要
Abstract
In order to ascertain the effects of water-retaining agent on soil moisture characteristics under different soil moisture conditions after the growth of winter wheat, the effects of different dosage of water retaining agent (T1:0;T2:27 mg/kg;T3:54 mg/kg;T4:81 mg/kg) on soil water retention, supplying water and infiltration capacity were studied through potting experiment condition were studied. The results indicated that water-retaining agent increased the capability of soil water retention, supplying water, infiltration and available moisture. Under mild stress condition, the capability of soil water retention, infiltration and available moisture of treatment 3 were the best compared with other treatments, while treatment 4 was the best for the capability of supplying water compared with other treatments. Under sufficient irrigation, the capability of soil water retention, supplying water, infiltration and available moisture increased with the dosage of water-retaining agent, but there was not significant difference between treatment 3 and treatment 4. Compared with mild water stress, the capability of soil water retention, supplying water and infiltration under the condition of sufficient irrigation were higher. Soil available moisture of treatment 3 under mild water stress was highest among all treatments, which increased by 18. 6% compared to the control. In all, from economical aspect, treatment 3 was the best to improve the soil properties.关键词
保水剂/水分条件/持水能力/供水能力/土壤有效水Key words
water-retaining agent/ water conditions/ capability of soil water retention/ capability of water supplying/ available soil water引用本文复制引用
杨永辉,李宗军,武继承,李学军,何方,杨先明..不同水分条件下保水剂对土壤持水与供水能力的影响[J].中国水土保持科学,2012,10(6):58-63,6.基金项目
国家"863"节水农业项目"绿色环保多功能保水制剂"(2006AA100215) （2006AA100215）
公益性行业(农业)科研专项经费项目"黄淮海高产农田作物需水及高效用水技术研究与示范"(201203077) （农业）
河南省杰出青年基金"保水剂应用对土壤环境的影响研究"(104100510024) （104100510024）
