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玉米地膜覆盖栽培,是一项行之有效的增产技术。尤其是在低温、干旱的丘陵区,增产效果更为明显。但它也存在着一些弊端,在干旱的春季,本来就有限的降雨,又很难被作物吸收利用,绝大部分都顺着地膜流到距作物较远的地方去了。针对这一问题,我县于1990年分别在地处丘陵的黑山寺乡口前村和卧佛寺乡大斜阳村搞了双槽铺膜试验。经一年观察,双槽铺膜玉米明显好于平铺膜的,具有集水抗旱、小雨大用,利于植株生长等效果,并最终表现为产量的增长。
Corn mulching cultivation is an effective stimulation technology. Especially in the low-temperature and arid hilly areas, the stimulation effect is more obvious. But it also has some drawbacks. In the dry spring, rainfall, which was originally limited, is hard to be absorbed by the crops. The vast majority of the rain flows along the film to locations far away from the crops. In response to this problem, my county in 1990 were located in the hills of the Montenegro Temple Township mouth before the village and the Temple Village Township engaged in double-slot membrane test. After one year of observation, double-trough coated corn was significantly better than the tiled membrane, with the effects of water catchment, drought and heavy rain, conducive to plant growth and other effects, and eventually showed an increase in production.