根据地方林业部门反应 ,最近发现在一些退耕还林的地中栽植的幼树生长缓慢 ,有的地块成活率极低 ,即使成活也生长不良 ,甚至死亡。 1997年黑龙江省宾县某林场发现栽种过大豆的土地使用过豆磺隆等除草剂后 ,栽植落叶松造成严重药害和大批树苗死亡事件。近年来由于退耕还林地块增 According to the response of the local forestry department, it has been recently discovered that young saplings planted in some areas of returning farmland to forestry have experienced slow growth, and some plots have very low survival rates and even poor growth and even death even after they have survived. In 1997, a forest farm in Binxian County, Heilongjiang Province found that the plants planted with soybeans had used herbicides such as triclopyrron, which caused serious phytotoxicity and large saplings death. In recent years due to returning land for farming plots