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森森因缺肥长势不良时,给其喷撒些肥料似乎就能解决问题,但是要计算出树木需要多少肥料是不容易的。施肥太少,树木受益不大;施肥太多虽保险,但浪费了金钱。现在可用测定树根营养吸收率的方法,解决这个难题。这项技术对那些要求精确算出施肥量的农民也很有价值。英国有300多万公顷的工业用林,其中大部分种植在土壤贫瘠的山区。这些地区降雨量大,排水能力差,气候寒冷,树木生长很困难。由于这些不利因素使有机质分解的速度减慢,从而阻碍了对树木的营养供给。
When Sensen is in poor condition due to lack of fertilizer, spraying some fertilizer seems to solve the problem, but figuring out how much fertilizer the tree needs is not easy. Too little fertilizer, trees do not benefit; fertilizing too much, although insurance, but wasting money. Now available to determine the root absorption rate of root methods to solve this problem. This technique is also valuable to farmers who demand precise fertilizer levels. There are over 3 million hectares of industrial forests in the UK, most of which are planted in barren mountain areas. These areas have heavy rainfall, poor drainage capacity, cold climate and difficult tree growth. As a result of these unfavorable factors, the decomposition rate of organic matter is slowed, which hinders the nutrient supply to the trees.