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在密云水库上游地区经济作物苹果园中采用微喷灌、滴灌和管灌进行对比试验研究,结果表明:3种微灌技术均能促进果树新梢枝条生长和果实横径增长,苹果增产效果明显。微喷灌和滴灌条件下枝条生长量分别较管灌减少11.1%和19.18%,能够适当控制果树枝条生长,减少剪枝工作量;与对照相比,微灌技术果实横径增长效果显著,3种微灌技术之间差异不明显;其中微喷灌方式增产幅度最高,达51 t/hm2以上,产量水分利用效率最大为9.288 kg/m3,比滴灌和管灌分别提高13.07%和41.01%。
The micro-irrigation, drip irrigation and tube irrigation in the apple orchard of the economic crops in the upper reaches of the Miyun Reservoir were compared. The results showed that the three kinds of micro-irrigation could promote the shoot growth and fruit diameter growth of apple shoots. Under micro-irrigation and drip irrigation conditions, the growth of shoots decreased by 11.1% and 19.18% respectively compared with tube irrigation, which could control the growth of branch of fruit trees and reduce the pruning workload properly. Compared with the control, The difference between micro-irrigation techniques was not significant. The micro-irrigation method had the highest yield increase of 51 t / hm2 and the highest water use efficiency of 9.288 kg / m3, which was 13.07% and 41.01% higher than that of drip irrigation and tube irrigation respectively.