造林前的整地,直接影响到造林后树木的成活率和长势。跃进农场四队过去在荒山造林不整地,多年来造林不成林,劳民伤财。去年春季,这个队营造837亩落叶松用材林,造林前全部采用灌木开荒犁机械开沟整地,有效地改变了造林地土壤的水、肥、气、热条件, Site preparation before afforestation directly affects the survival rate and growth of trees after afforestation. Yuejin farm four teams in the past in the barren hills, not afforestation for many years, waste of money. Last spring, the team created 837 mu of larch timber forests. Before the afforestation, all the trees were used for land reclamation and dug mechanization, effectively changing the water, fertilizer, gas and heat conditions of the afforestation soil,