甜椒在非充分灌溉条件下的耗水特征及其与产量的关系

Relationship Between Water Consumption and the Yield of Capsicum under Unsufficient Irrigation

通过大田试验就非充分灌溉条件下,水分亏缺对甜椒的蒸发蒸腾量、产量的影响进行了研究。分析了甜椒的耗水规律,确定了各个生育阶段Jensen模型下的作物敏感指数。研究结果表明:非充分灌溉可以有效地提高水分利用率。果期为甜椒需水的关键期,灌溉需首先满足本阶段需水。

Through the field experiment under unsufficient irrigation condition, the research of impact of soil water defict on the evapotranspiration and yield of capsium has been carried out. By analyzing the rule of crop water consumption, the sensitive exponents of the Jensen model in each growing stage have been deternmined. The results have shown that unsufficient irrigation can effectively increase the water use efficiency. The key period for crop water requirement of Capsicum is the fruit stage, so this stage of the water requirements must be satisfied first.