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液态地膜覆盖对土壤水分有效性的影响

尹光华1**,郝亮1,2,赵永红3,谷健1,刘作新1   

  1. (1中国科学院沈阳应用生态研究所, 辽宁省节水农业重点实验室, 沈阳110016; 2中国科学院大学, 北京 100049; 3辽宁省农业对外经济技术合作中心, 沈阳 110001)
  • 出版日期:2013-06-10 发布日期:2013-06-10

Effects of hydromulching on soil water availability.

YIN Guang-hua1**, HAO Liang1,2, ZHAO Yong-hong3, GU Jian1, LIU Zuo-xin1   

  1. (1 Key Laboratory of Watersaving Agriculture, Liaoning Province, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; 2 University of Chinese Academy of Sciences, Beijing 100049, China; 3Liaoning Provincial Agriculture Foreign Economic and Technical Cooperation Center, Shenyang 110001, China)
  • Online:2013-06-10 Published:2013-06-10

摘要:

采用田间微区试验方式,观测和分析了液膜地表覆盖下土壤含水量、花生植株伸长速率、叶面积指数、叶片光合速率、水分利用效率及产量等指标,并利用隶属函数法进行数值转换后,对液膜覆盖的土壤水分有效性进行了分析。结果表明,液膜覆盖提高土壤含水量103%~167%,且随液膜浓度的增大有效性提高;不同土层间,花生耗水量差异显著,其中以土层深度为20~40 cm差异最大;液膜覆盖也明显提高了光合速率,增幅为1.9%~15.6%;叶面积指数提高0.3%~26.4%,改善了植株光合形态。综合全部指标表明,液膜类型为3号,液膜浓度为高水平时,覆盖效应最为明显。

 

关键词: 日光温室, 蔬菜产量, 蔬菜残株, 堆肥, 根区环境

Abstract: A field micro-plot experiment with peanut was conducted to study the soil water content, plant elongation rate, leaf area index, photosynthetic rate, water use efficiency, and economic yield under hydromulching. By using subordinate function, the soil water availability was analyzed. Hydromulching increased the soil water content by 103%-167%, and improved the soil water availability. The peanut water consumption differed significantly with soil layer, being the greatest for 20-40 cm soil layer. Under hydromulching, the photosynthetic rate increased by 1.9%-15.6%, leaf area index raised by 0.3%-26.4%, and plant morphology was improved. In considering all indices, high concentration of hydromulching type 3 had the most obvious effect.

Key words: vegetable residue, vegetable yield., compost, solar greenhouse, root environment