Harm of blind & excessive applying fertilizer and development of new type of fertilizer;

The effect of row width and fertilizer amount on "Lanyin 3" zoysiagrass (Zoysia japonica) seed yield was observed in Shenzhen during 1993～1994, and the observations on the yield of seeds and the number of seed heads were analysed by regression.

Two factors random configuration design were used to study the densities and fertilizer amount in soybean variety Fudou 234.

Intelligent spatial decision support system for variable rate fertilizing -using ArcView GIS on precision agriculture;

Research and development of the proportionally-mixed variable rate fertilization system for cotton drip irrigation under mulch film;

Study on intelligent decision-making sustaining system of variable rate fertilization in precision agriculture;

Research on Variable Rate Fertilization Control System in Precision Agriculture;

Study on the Broadcast Cultivation Technique in Rape Ⅱ.Effects of different density and application amount on yield and agronomical character of Youyan 10;

The 3414 application design was used in rice to establish the mathematical model between application amount and rice yield.

Qianxiangyou 302,a hybrid rice variety,was tested to investigate effects of different sowing time and nitrogen application amount on its yield.