摘要
通过盆栽试验,研究了膜下滴灌及滴灌情况下温室青椒开花座果初期的耗水规律,分析了两种情况下土壤含水率、相对湿度、温度和叶面积指数(LAI)对青椒开花座果初期耗水量的影响。结果表明,膜下滴灌、滴灌情况下,植株平均耗水量分别为0.87和2.0mm/d,地膜覆盖使耗水量减少了51.3%;利用蒸发皿测定的水面蒸发量能够很好地估算温室内的青椒耗水量,两种情况下温室青椒开花座果初期蒸发皿系数分别为0.39和0.82;土壤含水率、温度与青椒耗水量同步变化,相对湿度与耗水量异步变化,叶面积指数(LAI)的增大使耗水量增加。
Experiment was done in pots.Water consumption for pepper in early flowering and setting fruit under film drip irrigation and drip irrigation in greenhouse was studied.In addition,the effect of soil water content,relative humidity,temperature and leaf area index on water consumption in early flowering and setting fruit for pepper in greenhouse under film drip irrigation and drip irrigation was analyzed.Under two conditions,average water consumption was respectively 0.87 and 2.0 millimeters everyday and water consumption with mulch was 51.3% less than that without mulch.Water consumption in early flowering and setting fruit could be well estimated through the data of the evaporation from water surface measured by pan,the evaporation pan index was 0.39 and 0.82,respectively.The curves of soil water content,temperature and that of water consumption were synchronous,the curve of relative humidity and that of water consumption was asynchronous,water consumption enhanced as LAI increased.
出处
《西北农林科技大学学报（自然科学版）》
CSCD
北大核心
2003年第6期79-84,共6页
Journal of Northwest A&F University(Natural Science Edition)
