滴灌条件下水肥耦合对温室番茄产量效应的研究

Coupling Effects of Water and Fertilizer on Tomato Yield under Drip Fertilization in Greenhouse

以番茄为供试作物,在温室内采用二次D-饱和最优设计进行水肥试验,探讨了滴灌条件下水、肥交互对温室番茄产量的影响。试验结果表明:影响番茄产量的主要因素是灌水量与钾肥用量的交互作用,其次是氮肥用量;仅从产量角度评价,以中等氮肥用量、高钾肥用量和高灌水量为水肥调控的最佳组合。

The paper discussed the coupling effects of dripirrigation a nd N and K on tomato yields in greenhouse. Tomato was the tested crop; D-saturat ion optimum design and micro-plot planting are used under the meadow soil in She nyang. Data analysis was done by using a stepwise regression. The results showed : Tomato economic yields were most significantly depended on the interactions of water and K, the application amount of N was listed at the second. From the re spond of tomato yields to N,K and water, the combination of mid-N-application, high-K-application and maximum irrigation was the optimum.