痕量灌溉在温室大桃上的应用

试验以日光温室大桃为供试作物，以常规畦灌和滴灌为对照，研究第一代痕量灌溉系统在地膜覆盖和地表裸露两种条件下对生长、产量和水分利用的影响。结果表明：痕量灌溉管路埋深50cm且地膜覆盖处理，痕量灌溉比畦灌和滴灌分别节约灌水80．1m^3／667m^2和40．0m^3／667m^2，水分利用效率比畦灌和滴灌分别增加16．1kg／m^3和10．6kg／m^3，经济产量无显著差异；痕量灌溉管埋深5cm、地表裸露条件下，痕量灌溉此畦灌和滴灌分别节约灌水88．9m^3／667m^2和39．8m^3／667m^2，经济产量比畦灌和滴灌分别减少11．5％和25．3％。痕量灌溉在果树上应用时，宜地膜覆盖并埋深30cm。

Trace Irrigation Used on Greenhouse Peach

With regular border irrigation and drip irrigation as control, the effect of first generation of trace irrigation system under 2 conditions of mulch-covering and surface exposed on peach growth, yield and water use efficiency in the greenhouse were researched. The results show that, compared to regular border irrigation and drip irrigation, the trace irrigation with pipe buried under 30 cm depth in the earth and mulch covered saved water 80.1 m3/667 m2 and 40.0 m3/667 m2 respectively; water use efficiency increased 16.1 kg/m3 and 10.6 kg/m3 respectively, and no significant differences in economic output. The trace irrigation with pipe buried only 3 cm depth and surface exposed saved water 88.9 m3/ 667 m2 and 39.8 m3/ 667 m2, but the economic yield decreased ll.5%and 25.3% respectively. This may suggest the trace irrigation should be buried under 30 cm depth with mulch-covering when used on fruit trees.