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渭北旱塬区是陕西小麦的集中产区。但小麦产量低而不稳,肥料施用量少是原因之一。有机肥施用面积仅占总耕地面积的20—30％,化肥用量每季每亩施N4斤,P_2O_50.6斤,N∶P_2O_5为1∶0.15,比例失调。为了提高该区小麦产量,我们开展了合理施肥技术的专题研究。
Weibei dryland is the focus of Shaanxi wheat producing areas. However, low and unstable wheat yield, fertilizer application is one of the reasons. The application area of organic fertilizer accounts for only 20-30% of the total cultivated area. The amount of chemical fertilizer applied N 4 kg, P 2 O 50.6 kg, and N: P 2 O 5 at 1: 0.15 in every season, the imbalanced proportion. In order to increase wheat production in this area, we conducted a special study on rational fertilization technology.