黄瓜结果期灌水上限的研究

Research on the up limitation of irrigation for cucumber during fruit-set period

为探索温室秋延后黄瓜结果期适宜灌水上限,以`津春3号'黄瓜为试材,研究了水分上限为80%、85%、90%、95%、100%田间持水量下黄瓜生长发育、光合作用、水分利用率及产量的变化。结果表明:水分上限为90%时,植株生长旺盛,根系活力强,光合作用及水分利用率最高,总产量显著高于其它处理,比水分上限为100%处理增产18.4%,节水效果较好,90%为最适的灌水上限。

In order to explore the suitable up limitation of irrigation for cucumber during fruit-set period for autumn delay planting in greenhouse, has researched the cucumber growth, photosynthesis, water use efficiency and yield change under different up limitation of soil moisture at 80%, 85%, 90%, 85% and 100% of field capacity and analyzed the impact of different up limitation of soil moisture to the irrigation times and irrigation volume for the cucumber during fruit-set period. The test material was ‘jinchun No.3’ cucumber. The results showed that when the up limitation of soil moisture was at 90% of field capacity, the plant was vigorous growing, root system was strong activity, obtained maximum of photosynthesis and water use efficiency, the gross yield was significantly higher than ot her treatments, and yield was increased 18.4% compared with 100% treatment, the water-saving effect was good. So the suitable up limitation for irrigation was 90% of field capacity.