日光温室嫁接黄瓜需水规律的研究

研究了日光温室盆栽黄瓜开花前期、结瓜初期、结瓜盛期及结瓜后期不同土壤水分条件对黄瓜蒸腾量和产量的影响,得出黄瓜的耗水规律、产量与水分之间的函数关系。结果表明:黄瓜对水分的消耗呈现开花前期与结瓜初期少、结瓜盛期多、结瓜后期少的变化规律,耗水高峰出现在盛瓜期;黄瓜总产量与总耗水量之间呈二次抛物线关系,最佳灌水量为399.8mm,最高产量为83028kg/hm2;水分生产函数的敏感指数按结瓜盛期、结瓜后期、结瓜初期、开花前期的顺序依次降低,与黄瓜耗水规律相一致。

Water consumption pattern of grafted cucumber in solar greenhouse

In solar greenhouse, the pot experiment was conducted to study the effect of different soil moisture conditions during four growing stages (early florescence stage, early fruit stage, exuberant fruit stage and late fruit stage) on transpiration (Ts) and yield of cucumber (Cucumis statirus L.) mulched with plastic film. The results showed that the amount of water consumption in early florescence stage and early fruit stage was lower than that in late fruit stage, and it was the highest in exuberant fruit stage. There was a close quadratic relationship between total yield and total amount of water consumption. The highest yield of 83 028 kg/hm~2 was obtained under optimal irrigation amount of 399.8 mm. Moreover, water sensitivity indices went down successively with the sequence of exuberant fruit stage, late fruit stage, early fruit stage and early florescence stage, which was identical to water consumption pattern.