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在栗钙土地区,表土层浅、钙积层厚且离地表较近的土壤,群众称之为白干土.这种土在内蒙古地区分布较广,仅突泉县就有一百多万亩.白干土坚硬致密,通气不良,保水性差,肥力低,碱性偏重,不适于树木生长,特别是树木根系难于穿透,因而在这些地区造林往往失败,或形成“小老树”.要使在白干土地区造林成功,必须在改良土壤上下功夫.在目前人工整地造林为主的情况下,提出如下两种造林方法,供各地在造林实践中试用.一、平地、岗地、缓坡地高垄台造林方法.在平地、岗地、缓坡地堆高60
In the area of chestnut soil, the soil with shallow topsoil, thick calcium layer and close to the surface of the earth is called white dry soil.This soil is widely distributed in Inner Mongolia, and there are over one million mu White dry soil is hard and dense, with poor aeration, poor water retention, low fertility, heavy alkalinity and is not suitable for the growth of trees, especially because the roots of trees are hard to penetrate, so afforestation in these areas often fails or “small old trees.” In the success of afforestation in the Baikandang area, we must work hard to improve the soil.At present, under the condition of artificial afforestation, we propose the following two kinds of afforestation methods for all localities to try out in the afforestation practice: 1. Flat land, hillock land, Taiwan afforestation method. In the flat, post, gently piled high 60