苹果滴灌试验及节灌制度研究

Test of drip irrigation for apple trees and research on water-saving irrigation system

按照水量平衡原理 ,通过测坑试验 ,得到苹果树各生育期在节灌条件下的耗水量 ;根据降水资料 ,确定了灌水定额、灌水部位、灌水关键期、灌水次数、计划湿润层深度、土壤湿润比、最大田间持水量、毛管移动次数、毛管布设方式、灌水形式等方面的有关指标 ,建立了苹果灌水定额、灌水方式、灌水时间、灌水部位“四适宜”的节灌制度。

The quantity of water consumption of apple trees in various growth stages under irrigation condition were obtained through pit test according to the principle of water quantity balance. Based on the data of precipitation, indexes were set for irrigation quota, parts of the plants to be irrigated, key time for irrigation, frequency of irrigation, planned depth of wetness, rate of soil moisture, maximum quantity of water contained in the fields, distribution and movement of sub pipes and so on. And a water saving irrigation system was established extended for proper irrigation quota, forms, times and parts of plants. \;