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近20年来,农业实验中很注意水稳性团聚体的测定,并且出现了很多不同的测定方法,一般说来,有以下三类: 1.测定水稳性的间接方法:(1)B.P.威廉斯,B.P.威廉斯和H.C.沙维诺夫的渗滤法,巴甫洛夫法;(2)威林斯基的点滴法。 2.筛分法:把筛上的团聚体沉入水中并筛分为各个部分。其中有巴甫洛夫法,丘林法,萨甫威诺夫法,M.X.比古列夫斯基法,威尔西宁法,Yoder法等。 3.计算统计法:安德里阿诺夫法等。 上述三种方法中,以筛分法较好,一般用的都是水筛法,这种方法,既能分出不同的团聚体粒级大小,也可以知道水稳性情况,在水筛法中,苏联应用最多的
In the past two decades, the determination of water-stable aggregates has been paid much attention in agricultural experiments and many different methods have been developed. In general, there are three types of methods: 1. Indirect methods for determining water-stability: (1) Perkins, BP Williams and HC Savignof percolation method, Pavlov method; (2) Willingsky’s drip method. 2. Screening method: The aggregate on the screen is submerged in water and sieved into various sections. Among them are Pavlov’s, Chulin’s, Safavinov’s, M.X. Büklevsky’s, Wilshire’s, Yoder’s and so on. 3. Calculation Statistics: Andrianoov law. Of the above three methods, the screening method is better, the commonly used are the water sieve method, this method can not only separate the size of different aggregates particle size, water stability can also know the situation, in the water sieve method In the Soviet Union, the most widely used