摘要
通过盆栽线辣椒试验,研究了不同的滴头流量、灌水定额及灌水周期对线辣椒的株高、茎粗、叶绿素的相对含量、光合作用、产量及水分利用效率的影响,结果表明,小流量滴灌能提高线辣椒的叶绿素含量,促进光合作用,增加坐果数,并能提高其产量和水分利用效率;采用小灌水定额高频率灌溉对于抑制地表无效蒸发作用显著,节水效果明显,建议在小流量微压滴灌条件下,采用小定额高频率灌溉制度。
In order to clarify the effect of low flow and micro-pressure drip irrigation on crop growth,the experiment was conducted to study on effects of emitter discharge rate,irrigation quota on capsicum height,culms diameter,chlorophyllous,photosynthetic rate,yield and water use efficiency.The results show that,low flow drip irrigation can improve capsicum chlorophyllous content and photosynthetic rate,at the same time,capsicum yield and the water use efficiency were improved.It is helpful to restrain noneffective evaporation by using small irrigation quota and high frequency irrigation.Thus,it is proposed that irrigation schedule of small irrigation quota and high frequency should be used under low flow and micro-pressure drip irrigation.
出处
《灌溉排水学报》
CSCD
北大核心
2010年第2期65-68,共4页
Journal of Irrigation and Drainage
基金
农业科技成果转化资金项目(2007GB2G000316)
中科院水保所领域前沿项目(SW04104)
关键词
小流量
微压滴灌
水分利用效率
线辣椒
low flow
micro-pressure drip irrigation
water use efficiency
