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中文摘要：
在相同灌水频率的条件下，对不同灌水定额条件下的水稻膜下滴灌试验研究，得出需水规律，覆膜与裸地土壤温度的变化，以及水稻的水分生产效率。研究表明：抽穗开花期是水稻生育过程中需水强度最大的时期，拔节孕穗期次之。相同灌水频率条件下，在覆膜种植的各处理中需水量随着灌水定额的增大而增大，处理3，灌水定额为180m3／hm2时，需水量最大为8306．85m3／hm2。相应的株高、含水率、水分生产效率、产量也最高。因此180m3／hm2比较适宜的灌水定额。
英文摘要：
On the basis of the same irrigation frequency, the drip irrigation under membrane experiment on rice under different irrigation quota indicates the water requirement rules, temperature changes of plastic mulching and bare soil, as well as rice water production efficiency. The study shows that： The flowering and head sprouting stage in the rice growth process is water demand strength biggest period, followed by jointing and booting stage. Under the same irrigation frequency conditions, water demand in the process of various mulching planting increases with increasing irrigation quota. When the irrigation quota is 90 ma/hm2 , the maximum water demand is 8 306.9 ma/hm2. At the same time, the corresponding plant height, moisture content, water production efficiency and the output are also the highest. Therefore, 180 ma/hm2 is the comparatively appropriate irrigation quota.
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