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北方地区尤其是干旱、半干旱地区,在农业栽培中广泛采用地膜覆盖技术,其实,盆栽花卉覆盖地膜也有益处。据笔者的实践,这样做有如下优点:1.可延长浇水的间隔时间,减少浇水次数。2.盆面覆盖地膜后,整个盆土中根系分布变得比较均匀,表层土壤中根系增多了。通常情况下,盆土表面由于蒸发快、干得早,根系拼命向有水的地方即土层深处发展,使浅表土层和深土层中根系分布严重不平衡。时间久了,盆底部分根系重叠缠绕,
In northern China, especially in arid and semi-arid areas, plastic film mulching is widely used in agricultural cultivation. In fact, it is also beneficial to cover the plastic film with potted flowers. According to the author’s practice, this has the following advantages: 1 can extend the watering interval, reducing the number of watering. After covering the plastic film on the basin surface, the distribution of root system in the whole basin soil became more uniform, and the root system increased in the surface soil. In general, the surface of basin-soil evaporates quickly and dries earlier. The root descends to descend to the place where there is water, that is to say, the depth of the soil layer develops so that the distribution of root systems in the superficial and deep layers is seriously unbalanced. Over time, the root part of the pelvic overlap wound,