For exploring accurately the difference of various fertilization types in peach land of Beijing,soil carbon flux diurnal variation of three typical fertilization types in peach farm of Pinggu in Beijing were measured continuously in summer with LI-8100 automated soil CO2 flux system.

Three regional fertilization models for the "high","medium" and "low" soil fertility grades were established based on 227 field tests on the NPK fertilizer efficiency for the grain and oil crops.

Study on the technology of variation of soil nutrients in farmland and regionalized fertilization of soybean;

Spatial variability and regionalized fertilization in Shuangcheng city of Heilongjiang province were studied using the technology of Global Positioning System and Geography Information System.

The arable land in Guizhou province is divided into three classes of application divisions according to the space variability of topography,topographical features,climatic condition,soil type and soil nutrition factors.