| 虎胆·吐马尔白,王一民,牟洪臣,张金珠.膜下滴灌棉花根系吸水模型研究[J].干旱地区农业研究,2012,30(1):66~70 |
| 膜下滴灌棉花根系吸水模型研究 |
| Root water uptake model in drip irrigation under mulched film |
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| DOI：10.7606/j.issn.1000-7601.2012.01.12 |
| 中文关键词: 根系吸水模型 根长密度 膜下滴灌 棉花 |
| 英文关键词:root water uptake model root length density drip irrigation under mulched-film cotton |
| 基金项目:国家自然科学基金“干旱区膜下滴灌棉田土壤水盐运移规律与次生盐渍化预警”（51069015）；新疆自治区“十二五”重大专项“绿洲灌区节水安全关键技术研究与示范”(201130103-3) |
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| 中文摘要: |
| 通过室内三组桶栽水平试验，在不同生育期对棉花根系进行取样，得到棉花根长密度分布函数，并在每次灌水前后对试验桶进行取土样及称重，进而得到土壤剖面的含水量和棉花的蒸腾量；由根长密度分布函数、土壤含水量及棉花蒸腾量，选定根系吸水模型为Feddes模型，经模型计算：土壤水分的模拟值与实测值吻合较好，该模型能够准确地描述膜下滴灌棉花根系吸水，表明建立的棉花根系吸水模型是可行的。 |
| 英文摘要: |
| The founction of root length density distribution in different growth stages of cotton was obtained through three groups of indoor bucket planting experiment. The water content in soil profile and the transpiration of cotton were derived by weighing the bucket before and after irrigation. And Feddes model was selected as the water uptake model of root system according to these indexes. The results of calculation with the model showed that the simulated soil moisture value nearly dovetailed the measured value, which showed that this model can accurately describe the moisture uptake of cotton root under mulched film with drip irrigation. |
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