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第一节林地施肥的依据与肥力有关的土壤各种性质交互影响地变化着,而且这种变化是可逆的。土壤的变化一旦向不良的方向进行,其结果就产生恶性循环,使土壤急速地贫瘠化,终致成为荒废的林地,或光秃的不毛之地;一旦向良好的方向发展,其结果就产生良性循环,这种循环纵然有一定界限,但在到达界限之前土壤已经比较迅速地肥沃了。因此,如果人为地补足那些引起不良后果的自然缺陷,促进土壤的调节作用,则由于阻止了不良倾向而向好的方向转变,就能很好地增进土壤肥力。
The first section of woodland fertilization based on fertility and soil properties of various interactive changes, and this change is reversible. Once the changes in the soil are moving in the wrong direction, the result is a vicious cycle of rapid soil depletion that will eventually lead to abandoned woodlands or bare barren land; once the good direction has been developed, the result will be A virtuous circle, a cycle that, although it has a certain limit, has fertilized quite rapidly before it reaches its limit. Therefore, if artificially making up for those natural defects that cause undesirable consequences and promoting the regulation of the soil, soil fertility will be well enhanced by shifting the good direction by preventing undesirable tendencies.