我省农业区土壤养分的特点是“缺氮、少磷、钾丰富”。据农林厅资料,全省耕地缺氮面积约占70％,缺磷面积约占90％。土壤中钾素含量丰富。因此,我省主要作物的施肥至今仍以氮磷化肥为主,微量元素肥料因受测试手段等条件限制,目前仍处于肥效试验阶段。化肥施用主要是集中在水地,多数在春季施用,少部分实行秋施。干旱的浅山及高寒的脑山地区受气候因素等影响产量低而不稳、化肥肥效也受到很大的影响。由于我省 Soil nutrients in agricultural areas in our province is characterized by “nitrogen deficiency, less phosphorus, potassium-rich.” According to the information from the Agriculture and Forestry Department, the province’s cultivated land accounts for about 70% of the total nitrogen-deficient area and the phosphorus-deficient area accounts for about 90%. The soil is rich in potassium. Therefore, the fertilization of main crops in our province is still dominated by nitrogen and phosphorus fertilizers, trace element fertilizers due to test methods and other conditions, is still in fertilizer test stage. Fertilizer application is mainly concentrated in the water, most of the application in the spring, a small part of the implementation of autumn. Drought shallow mountains and alpine mountain areas affected by climate factors such as low and unstable output, fertilizer efficiency is also greatly affected. Because of my province