| According to status of chemical fertilizer applying amount increased sharply as well as nutrients resource input problems of Chinese farmers, winter wheat nutrients resource inputting investigation and analysis were carried out on 3 counties in Guanzhong area,Shaanxi province in 2009. The obtained result showed that winter wheat yield for 38.3 percent of farmers was in the average, 26.7 percent was lower, 22.5 percent was the lowest, 11.7 percent was higher, 0.8 percent was the highest. Average pure N applying amount of winter wheat was 191.0 kg·hm-2, P2O5 applying amount was 129.9 kg·hm-2, K2O was 43.8 kg·hm-2. For N applying amount,12.5 percent of farmers was suitable, 17.5 percent was lower, 20.0 percent was the lowest, 11.7 percent was higher, 38.3 percent was the highest. For P2O5 applying amount, 8.3 percent of farmers was suitable, 37.5 percent was lower, 19.2 percent was the lowest, 23.3 percent was higher, 11.7 percent was the highest. For K2O applying amount, 6.7 percent of farmers was suitable, 5.0 percent was lower, 85.8 percent was the lowest, 1.7 percent was higher, 0.8 percent was the highest. Chemical fertilizer is the main nutrients resource used for winter wheat, organic manure is the supplementary. Most of fertilizers were used as base application. |
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