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试验结果表明,洋葱平畦地膜覆盖后,3月24日到6月27日8时5厘米地温比对照提高。—3.8℃,3月和4月增温较多,5月和6月增温较少。地膜覆盖后洋蔥叶片、鳞茎和根系的大小、重量都比对照显著增加。在3月20日定植条件下,地膜覆盖亩产2634.38公斤,对照亩产1821.88公斤,处理比对照每亩增产812.5公斤,增产44.6%。这是一项有效的增产措施,可大面积用于生产。
The test results showed that after the onion wasp mulch was covered, the ground temperature at 8:00 and 5 cm from March 24 to June 27 was higher than that of the control. - 3. 8 ℃, more warming in March and April, less warming in May and June. After mulching the onion leaves, bulb and root size, weight increased significantly compared with the control. In the March 20 planting conditions, mulching 2634.38 kilograms per mu, control of 1821.88 kilograms per mu, compared with the control yield 812.5 kilograms per mu, an increase of 44.6%. This is an effective stimulation that can be used extensively for production.