Study on Soil Nutrient Precision Management in Jiangfeng Farm

The effects of soil nutrient precision management on yield of wheat and barely in Jiangfeng Farm,Songjiang section, Shanghai were studied using GPS for site-specific management and ASI for fertilizer recommendation. The results indicated that soil available nutrient was effected by structure factors including parent rock, soil type and so on. The yield of wheat and barely was highly related to soil available nutrient. When soil available NH4-N and Zinc was at the critical level, there were great effects on crop yield and nitrogen and Zinc application had obvious benefits which increasing 30% nitrogen and Zinc fertilizers could obviously increase crop yield with 42.0% in wheat and 37% in barely.