日光温室黄瓜地下滴灌灌溉制度的试验研究

利用放置于作物冠层上部的20 cm标准蒸发皿对地下滴灌条件下日光温室黄瓜的灌溉制度进行了试验研究。结果表明,灌水量对黄瓜生长、黄瓜果实产量和果实品质均有极显著影响,而灌水周期的影响不显著,灌水周期和灌水量二者的交互作用也没有显著影响。随灌水量的增加,黄瓜的产量和品质均呈现先升后降的趋势,黄瓜产量与灌水量、作物耗水量均存在二维抛物线关系。从实现黄瓜高产、优质及节水增效的目标出发,日光温室黄瓜在地下滴灌条件下,适宜的灌水量为0.8Ep(Ep为20 cm标准蒸发皿的蒸发量),灌水周期为8 d。

Subsurface drip irrigation scheduling of cucumber grown in solar greenhouse

Subsurface drip irrigation scheduling of cucumber grown in solar green house was studied using a 20 cm diameter standard pan placed above the crop canopy.The results showed that irrigation water amount had significant effect on cucumber crop development,cucumber fruits yield and fruit quality while irrigation interval and interaction of irrigation amount and irrigation interval had no significant effects.With the increasing of irrigation water amount,the fruits yield and quality increased first and decreased afterwards.There was a parabola relationship between fruits yield and irrigation water amount,and the relationship between fruits yield and crop water consumption was the same.To attain high yield,good quality and high water use efficiency,the optimum subsurface drip irrigation amount was 0.8Ep(Ep was the 20 cm standard pan evaporation),and irrigation interval was 8 d for cucumber grown in solar greenhouse.