| 秸秆覆盖条件下玉米需水量及作物系数的试验研究 |
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| 引用本文： | 陈凤,蔡焕杰,王健. 秸秆覆盖条件下玉米需水量及作物系数的试验研究[J]. 灌溉排水学报, 2004, 23(1): 41-43 |
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| 作者姓名： | 陈凤 蔡焕杰 王健 |
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| 作者单位： | 西北农林科技大学,旱区农业水土工程教育部重点实验室,陕西,杨凌,712100;西北农林科技大学,旱区农业水土工程教育部重点实验室,陕西,杨凌,712100;西北农林科技大学,旱区农业水土工程教育部重点实验室,陕西,杨凌,712100 |
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| 基金项目： | 国家高技术研究发展计划项目(2002AA2Z4031)，高等学校博士点基金项目(20020712020) |
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| 摘 要： | 采用FAO推荐的双作物系数法计算了秸秆覆盖条件下夏玉米的作物系数。结果表明,秸秆覆盖对含水量影响较大,0～10cm土层土壤含水量随着麦秸覆盖量的增加而增大;秸秆覆盖量对棵间蒸发量E和土壤蒸发系数Ke的影响较大,E和Ke值随覆盖量增加而减小,在玉米生长初期阶段影响最大,中期阶段影响最小;有覆盖试验区需水量比无覆盖区小,有一定的节水效果。
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| 关 键 词： | 秸秆覆盖 双作物系数法 土壤含水量 土壤蒸发系数 作物需水量 |
| 文章编号： | 1000-646X(2004)01-0041-03 |
| 修稿时间： | 2003-08-15 |
Evaluation of Crop Water Requirement and Crop Coefficient of Straw-mulched Summer Maize |
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| CHEN Feng,CAI Huan-jie,WANG Jian Technology University of Agricultural and Forestry,Yangling ,China). Evaluation of Crop Water Requirement and Crop Coefficient of Straw-mulched Summer Maize[J]. Journal of Irrigation and Drainage, 2004, 23(1): 41-43 |
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| Authors: | CHEN Feng CAI Huan-jie WANG Jian Technology University of Agricultural Forestry Yangling China) |
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| Affiliation: | CHEN Feng,CAI Huan-jie,WANG Jian Technology University of Agricultural and Forestry,Yangling 712100,China) |
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| Abstract: | Based on the analysis of field experimental data, crop water requirement and crop coefficient of straw-mulched summer maize are evaluated with dual coefficient approach recommended by FAO. Results show that straw-mulching has effect on soil water content of 0～10 cm layer, crop water requirement and the soil evaporation coefficient, Ke. Ke is lower for high treatment straw-mulching during the initial growth stage. Straw-mulched maize uses less water than other non-mulched field. |
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| Keywords: | straw-mulching dual crop coefficient approach soil water content the soil evaporation coefficient crop water requirement |
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