The K absorption by tea trees was increased with the years increased in pot experiment.
在盆栽试验中，随着茶树年龄的增加，茶树对K的吸收量亦增加。
Two gate variable reduction principles, algorithms of computing K-trees and minimum K-cuts of a network are proposed firstly.
首先提出了网络门限变量的两个化简原则及计算网络K-树和极小K-割的算法。
Furthermore, proportion of total N, available P, available K in soil are dissimilar after the disease invaded: Capacities of resistance on disease will be enhanced if infect trees are cut appropriate.
此外，林地内的土壤元素含量在病害侵入前后也会发生一定的变化：受到轻度砍伐的林地内其P、K含量较高，有利于提高树木对病虫害的抵抗能力。
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