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保水剂不同用量对土壤理化性状和木薯产量的影响
引用本文:莫凡,罗兴录,周红英,黄秋凤,杨鑫.保水剂不同用量对土壤理化性状和木薯产量的影响[J].广西农业科学,2010,41(5):459-462.
作者姓名:莫凡  罗兴录  周红英  黄秋凤  杨鑫
作者单位:1. 南宁市灌溉试验站,南宁,530000
2. 广西大学农学院,南宁,530005
基金项目:国家农业科技成果转化项目,国家科技支撑计划项目 
摘    要:以木薯品种新选048为试材,进行保水剂不同用量对土壤理化性状及木薯产量的影响试验,探讨木薯施用保水剂的最佳用量及经济效益。结果表明:随着保水剂施用量的增加,土壤含水量增加,土壤毛管孔隙度、总孔隙度增大,土壤有机质、碱解氮、速效磷、速效钾含量增加。木薯施用保水剂后可达到增产、增收的效果,其最佳施用量为30kg/ha。

关 键 词:保水剂  土壤理化性状  木薯  产量

Effects of different dosages of water-retaining agent on physical and Chemical properties of Soil and yield of cassava
MO Fan,LUO Xing-lu,ZHOU Hong-ying,HUANG Qiu-feng,YANG Xin.Effects of different dosages of water-retaining agent on physical and Chemical properties of Soil and yield of cassava[J].Guangxi Agricultural Sciences,2010,41(5):459-462.
Authors:MO Fan  LUO Xing-lu  ZHOU Hong-ying  HUANG Qiu-feng  YANG Xin
Institution:1 Irrigational Station of Nanning City, Nanning, Guangxi 530000, China; 2 Agricultural College, Guangxi University, Nanning 530005, China)
Abstract:The new cassava variety Xinxuan 048 was planted in field and different dosages (0, 30 and 60 kg/ha) of water-retaining agent (Jifengnonglin) were applied with 5 kg soil to 10 cm of root system of cassava after top-dressing, the effects on physical and chemical properties of soil and yield of cassava, were investigated at harvest. The soil water content, soil capillary porosity and total porosity increased with the increase in concentration of water-retaining agent, and the con- tent of soil organic matter, alkali hydrolysable nitrogen, available phosphorus and available potassium also increased. Applying water-retaining agent also resulted in higher yield and benefit of cassava. Water retaining agent was found to be the best when applied @30 kg/ha.
Keywords:water-retaining agent  soil physical and chemical properties  cassava  yield
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