多功能保水剂对苜蓿产量的影响.pdfVIP

中国农学通报 2010,26(18):210-212 Chinese Agricultural Science Bulletin 多功能保水剂对苜蓿产量的影响 韩广津 （东营市广北农场科研所，山东东营257347 ） 摘 要：研究多功能保水剂对苜蓿产量的影响。以东营为实验点，于2007 年采用四种不同施用量对比， 找出最佳用量，2008 年进行推广试验。保水剂不同施用量都能提高苜蓿产量，随着施用量的增加，提高 2 程度也加大，但从最大经济效益来讲，以45 kg/hm 为最佳施用量；施用多功能保水剂还能增加苜蓿体内 干物质的积累。施用保水剂能提高苜蓿产量，降低含水量，增加干物质的积累。 关键词：多功能保水剂；产量；含水量；干物质 中图分类号：S482.99 文献标志码：A 论文编号：2009-1738 Effects of Applying Multi-functional Water Retaining Agent on the Yield of Aalfalfa Han Guangjin (GuangBei Farm of Dongying City, Dongying Shandong 257347) Abstract: This paper studied the effects of applying multi-functional water retaining agent on the yield of alfalfa at Dongying. We used four different fertilizers for contrasting in 2007 to find the best dosage and will continue to extend the trial in 2008. The yields of alfalfa increase when different amount of water retaining agents are applied. The increasing rate of the yield increases with the increasing of the application rate. However, the best amount is 45 kg/hm2 from the point of the largest economic benefits. The application of multi-functional water retaining agent can increase the dry matter accumulation of alfalfa. Application of multi-functional water retaining agent can increase alfalfa yields, lower water content, increase the dry matter accumulation. Key words: multi-functional water retaining agent; yield; water content; dry matter material 0 引言 过30 多年来的发展，在农业生产上的应用越来越受到 中国是严重缺水的国家，被列为世界13 个贫水