Using the dry sieve method to the classification of soil aggregates, Jiangbo Fan and care benefits elementary classification of inorganic phosphorus improved method for the determination of the components of the inorganic phosphorus in the different aggregates.

Using dry sieve method to conduct soil classification, Chiang Kai-shek reunion Commonwealth Park San Francisco and lab primary person interests of inorganic phosphorus levels measured improvement act in different reunion group of inorganic phosphate.

Uses the dry screening law to carry on the soil coacervate graduation, Jiang Baifan and gives a thought to in the inorganic phosphorus graduation improvement law determination different coacervate which the profit primary person proposed the inorganic phosphorus component.

Dry sieve method for soil aggregate grading, Jiang b-f and Gu Yichu, claims of inorganic phosphorus grade improved method for the determination of inorganic phosphorus fractions in different aggregates.