Under such situation,the paper has discussed ways to improve collection utilization,and put forward new countermeasures in addition to the traditional way to improve collection utilization rate.

A study on the physiological properties of root systems in various wheat varieties and the effects of their phosphorus uptake and utilization efficiency on the yields;

Apraisal about the utilization efficiency of sports resource in colleges and universities;

Analysis on Utilization Efficiency of Agricultural Water Resource in China s Central and Western Regions;

Effective ways to increase the utilization ratio of colleges and universities credit funds;

It is the requirement for the development of the civilian-run colleges and universities to enhance the utilization ratio of the educational resources.

Supply,uptake and use efficiency of N,P and K in aerobic rice and wheat rotation system;

In view of economic benefit and environmental protection,more and more attention has been paid to nitrogen(N)use efficiency by plants in recent years.

Six types of rice--conventional Japonica (Ⅰ), hybid Japonica (Ⅱ), conventional Indica (Ⅲ), hybrid Indica (Ⅳ), widely\|compatible cultivars (Ⅴ) and two\|line hybrid Indica (Ⅵ), were cultivated in continuously flowing nutrient solution to investigate differences of nitrogen uptake and nitrogen use efficiency between rice types.