不同覆盖条件绿洲棉田作物系数与覆膜系数试验研究  

Study on Crop Coefficient and Film Covering Coefficient of Oasis Cotton Field Under Different Covering Patterns

作　　者：葛瑞晨 乔长录[1,2] 蔡国涛 任锦豪 GE Ruichen;QIAO Changlu;CAI Guotao;REN Jinhao(School of Water Conservancy and Architectural Engineering,Shihezi University,Shihezi 832000,China;Key Laboratory of Modern Water-Saving Irrigation Corps,Shihezi 832000,China)

机构地区：[1]石河子大学水利建筑工程学院,新疆石河子832000 [2]现代节水灌溉兵团重点试验室,新疆石河子832000

出　　处：《人民黄河》2021年第4期155-159,164,共6页Yellow River

基　　金：国家自然科学基金资助项目(51769030);新疆生产建设兵团应用基础研究计划项目(2016AG014);新疆生产建设兵团节水灌溉试验计划项目(BTJSSY-201903)。

摘　　要：为探求不同覆盖条件下绿洲棉田的作物系数与覆膜系数,利用石河子大学节水灌溉站2018年蒸渗仪、气象站、叶面积仪、EM50实测数据,分析不同覆盖条件下绿洲棉田全生育期的蒸散量、作物系数以及覆膜系数。结果表明:不覆膜滴灌全生育期作物系数为1.08,覆膜滴灌全生育期作物系数为0.79。苗期覆膜系数为0.7725,蕾期覆膜系数为0.7186,花铃期覆膜系数为0.7778,吐絮期覆膜系数为0.9238。两种不同滴灌方式下的叶面积指数与作物系数为乘幂函数关系,且相关性显著。可以通过棉花不同生育期的覆膜系数以及叶面积指数与作物系数的拟合关系式,将不同覆盖方式下的作物系数相互转化。In order to explore the crop coefficient and mulching coefficient of oasis cotton field under different mulching methods.The evapotranspiration,crop coefficient and film mulching coefficient of oasis cotton field under different mulching modes were analyzed by using the data of evapotranspiration meter,meteorological station,leaf area meter and EM50 measured in the water⁃saving irrigation station of Shihezi University in 2018.The outcomes show that the crop coefficient of non⁃mulched drip irrigation is 1.08 and crop coefficient of film mulching drip irrigation in whole growth period is 0.79.The film mulching coefficient is 0.7725 at seedling stage,0.7186 at bud stage,0.7778 at flowering and boll stage,and 0.9238 at flocculation stage.Under the two different drip irrigation methods,the leaf area index and crop coefficient are fitted by power curve,and the correlation is significant.Crop coefficients under different cotton mulching patterns can be transformed into each other through the fitting relationship between cotton mulching coefficients at different growth stages and leaf area index and crop coefficients.

关 键 词：绿洲棉田 作物系数 蒸渗仪 覆膜系数 叶面积指数 

分 类 号：S274.3[农业科学—农业水土工程]