ZB土壤保水剂不同施用量对旱地玉米产量构成及水分利用的影响

Effect of ZBz Absorbent Polymer on Dryland Maize Yield Components and Water Use Efficiency

该试验对宁夏中部干旱带旱地玉米施用土壤保水剂的效应进行了研究。结果表明：ZB保水剂对于旱地玉米栽培具有一定的保水蓄水增产作用，可显著提高0-20cm土层土壤水分含量；对20～40cm土层土壤含水量的影响以玉米拔节期为分界线，播种期到拔节期可显著提高土壤含水量，拔节期到收获期土壤含水量低于对照处理；在旱作条件下保水剂的施用量以2g／m2为最佳，该处理可明显增强植株长势，增加根系密度，提高玉米产量和水分利用效率。

Effect of ZB absorbent polymer on dryland maize yield components and water use efficiency was studied. It turned out that ZB absorbent polymer could increase the lasting drought-resistant ability of soil and maize yield which could significantly improve the moisture content of 0-20 cm soil layer soil. ZB absorbent polymer could significantly increase the moisture content of 20-40 cm soil layer soil from seeding time to jointing stage. The soil water content from jointing stage to harvest was lower than the contrast. 2 g/m2 absorbent polymer was the best treatment under dry-farming which could obviously enhance the plant growth and increase maize yield.