The absorption characteristics of N,P,K,Ca,Mg,Fe,Zn and B nutritive elements to the 2—10 plant-age leaf blades and the identical plant-age blossoms and the no-blossom leaf blades of Strelitzia reginae,and the influence of formula fertilizer on the growth and blossoms were studied.

Discussion on technique for formula fertilization and agrochemical service by fertilizer enterprises;

The 3414 test of rice formula fertilization with soil test in percogenic purple mud field has been studied in Dazhou City, the results indicated that, rice yield had a high positive correlation with fertilization amount, the correlation between nitrogen and yield was the best, phosphorus and potassium took second place.

The soil obstacle factor, the critical values of some nutrients and the supply intensity, as well as fertilizer efficiency should be paid more attention in formula fertilization by soil testing.

Sugarcane Nutrition Requirement and Balanced Fertilization Methods;

Construction of mathematic model for solar greenhouse cucumber balanced fertilization in the sandy land;

This experiment adopt three factor five level quadratic component rotational design to research the effect of the economic traits of bitter gourd by nitrogen, phosphorus and potassium balanced fertilization.

The experiment of prescription fertilization on Pyrus pyrifolia ‘Whangkeumbae’ was carried out by orthogonal array method.

Aiming at nutrient prescription given in the process of prescription fertilization, this paper presents an exhaustive algorithm by computer to select the best fertilizer from market.

：This paper discusses content, system design, data structure and decision flow of prescription fertilization software development from the component of management information system, and harmonizes relations of fertilization information in the view of system analysis.

Both domestic and overseas research advances related to prescribed fertilization applied to Populus plantations were reviewed regarding to the fundamental theories,fertilization effect and economic benefits.

The knowledge representation of prescribed fertilization in expert system is of integration and complexity,as prescribed fertilization k.

Study on the effect of formulated fertilization of plywood timber for Poplar Zhonglin-46;

Effect of formulated fertilization on the agronomic character and yield of earlier rice;