根据退耕地的特点 ,摸索出影响退耕还林地造林成活率的主要因子及改善林地环境、培育良种壮苗、掌握造林时机 ,做好镐抚和病虫害防治等措施 ,可保证退耕地造一片 ,活一片 ,成林一片。 According to the characteristics of returning land for cultivation, find out the main factors affecting afforestation survival rate of converting farmland into forestry land, improve the environment of forest land, cultivate strong seedlings, master the afforestation opportunity, do a good job of pickaxe and prevention and cure of pests and diseases. One, into a forest.