在耕地周围的林带和零星大树,常因根系大量伸入农田,夺走大量水肥而影响农作物的产量。各地常用开沟切根的办法以防止树木根系和农田作物争肥夺水。但此法费时费工,而且效果不太理想。主要原因是开挖的隔离沟外侧,常形成大量根蘖苗,如不及时除萌清理,新生幼树将继续胁地。同时,沟内根系被积土填满,需每年清理。否则,新生根系亦会重新穿过隔离沟而继续胁地。另外,在耕地地头开沟堆上,既多占耕地面积,又不方便畜力和机具耕作。为解决上述问题,在挖沟切根的同时,可在沟内埋入塑 Around the arable land around the forest and sporadic trees, often due to a large number of roots into the farmland, take away a large number of water and fertilizer and affect the crop yield. Ditches and cuttings are commonly used around the country to prevent tree roots and farmland crops from competing for water. However, this method is time-consuming and labor-intensive, and the effect is not very satisfactory. The main reason is the excavation of the outer trench, often forming a large number of tiller seedlings, if not promptly removed Meng, newborn sapling will continue to threaten. At the same time, the ditch roots fill fill, need to be cleaned every year. Otherwise, new roots will also re-run through the isolation trench and continue to threaten. In addition, in the ditches of cultivated land ditches, it not only accounts for more cultivated land, but also inconveniences of animal power and machinery. In order to solve the above problems, while digging ditches, they can be embedded in ditches