中国化肥发展思路主要是受第二次全国土地调查（？年）结果。据悉，中国农田土壤严重缺磷（有效磷 无重力搅拌机 around%， phosphorus deficiency (~ mg / kg) in the area of about%， the proportion of area of soil zinc%。Soil 盘式搅拌机 phosphorus 牛粪有机肥烘干机 deficiency was once a major obstacle factors， which greatly promoted the development of China‘s phosphate fertilizer industry。But also because of the lack of a limiting factor of soil zinc， molybdenum， boron， sulfur and other trace elements inadequate attention。After many years of high

　　

yielding planting and fertilizing， planting high coefficient crops， farmland nutrient of great 转股搅齿造粒机 change。According to the Ministry of Agriculture to monitor China’s current arable land available phosphorus content of the soil increased， reaching phosphorus richness， some years can not Phosphate Fertilizer。Excess phosphorus can induce the soil soil zinc， zinc uptake on Crop。