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以矮化密植“工藤富士”苹果树为研究对象,通过大田滴灌和痕量灌溉对比试验,研究2种不同灌溉方式及痕量灌溉2种不同灌水定额下,果园土壤水分的分布规律以及灌溉水的利用率,并结合果树实际水分需求,确定合理的灌溉方式、灌水定额、灌溉频率。结果表明:灌水量相等情况下,痕量灌溉的灌溉水利用率高于滴灌;苹果树痕量灌溉适宜的灌水定额为12L·株-1,流量0.2L·h-1,灌水频率约3~4d一次。
Taking the dwarf and close planting “Kudo Fuji” apple tree as the research object, through the comparative experiments of field drip irrigation and trace irrigation, the distribution law of soil moisture in orchard under two different irrigation methods and two kinds of trace irrigation under different irrigation quotas were studied. Irrigation water utilization, combined with the actual demand for fruit trees to determine the appropriate irrigation methods, irrigation quota, irrigation frequency. The results showed that the irrigation water use efficiency of trace irrigation was higher than that of drip irrigation under the condition of equal amount of irrigation. The appropriate irrigation quota of apple tree was 12L · plant -1, the flow rate was 0.2L · h-1 and the irrigation frequency was about 3 ~ 4d time.