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南方气候区冬菠菜需水量分析
引用本文:张黎明,王栋,金小平,侯会静. 南方气候区冬菠菜需水量分析[J]. 安徽农业科学, 2009, 37(4): 1516-1517
作者姓名:张黎明  王栋  金小平  侯会静
作者单位:江苏省昆山市水利技术推广站,江苏,昆山,215300;河海大学水文水资源与水利工程科学国家重点实验室,江苏,南京 210098;河海大学农业水土工程学院,江苏,南京 210098
基金项目:河海大学-南京水利科学研究院水文水资源与水利工程科学国家重点实验室开放研究基金
摘    要:[目的]研究南方气候区冬菠菜需水量。[方法]设计3种灌水下限指标处理,分别为田间持水量的90%(处理1)、80%(处理2)和70%(处理3),每个处理设置2个重复,研究不同灌水指标下冬菠菜的需水量。分析了冬季菠菜的需水量ET;采用改进的彭曼公式计算参考作物腾发量E%,进而求出作物系数Kc;利用水面蒸发量玩计算需水系数d;并用ISD法对需水量、产量、作物系数、需水系数和叶面积作多重比较分析。[结果]各处理的需水量无显著性差异,降雨对需水量的影响很大;处理1的产量和叶面积显著大于处理2、3,处理2、3之间无显著差异。[结论]为节约菠菜灌溉用水和合理利用水资源提供科学依据。

关 键 词:冬菠菜  需水量  作物系数  需水系数  叶面积

Study on Water Requirement of the Winter Spinach in the Southern Climatic Region
Affiliation:ZHANG Li-ming et al (Kunshan Promotional Station of Water Conservancy Technique in Jiangsu Province, Kunshan, Jiangsu 215300)
Abstract:[Objective] The research aimed to study the water requirement of the winter spinach in the southern climatic region.[Method] In order to study the water requirement of the winter spinach with different irrigation indice,3 different irrigation lower limits that were 90%(treatment 1),80%(treatment 2) and 70%(treatment 3) of the field moisture capacity were designed,and every disposal had 2 repeats.Water requirements were analyzed based on experiment date.The reference crop evapor transpiration was worked out based on improved equation of Penman-Montieth,then the crop coefficients were gained.Water requirement coefficients were calculated by method of pan evaporation.The water requirement,output,crop coefficient,water requirement coefficient and leaf area were compared with LSD method.[Result] The results indicated that the water requirement among treatments had no significant difference,and the rainfall had great effects on water requirement.The yield and leaf area of treatment 1 were much greater than the others,but the other two treatments had no significant difference.[Conclusion] The study provided the scientific basis for irrigation water of spinach and reasonably using water source.
Keywords:Winter spinach  Water requirement  Crop coefficient  Water requirement coefficient  Leaf area
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