What is Integrated Management of Water and Fertilizer?
According to Gao Xiangzhao, the chief expert of Chinese Agricultural Extension Service Center, the integrated management of water and fertilizer is comprehensive adjustment and integrated management on water content and nutrient of crop on the basis of its requirements, so as to accelerate fertilizer efficiency by water and adjust the water volume by fertilizer for full integration, thus promoting their utilization efficiency.
The narrow meaning of integrated management of water and fertilizer is fertigation. That is to dissolve the fertilizer into water and make irrigation and fertilization proceed at the same time by virtue of pipeline irrigation systems, which can meet the crop’s need for water and nutrient timely and quantitatively, realizing integrated management of water and fertilizer and efficient use.
Compared with traditional mode, the integrated management of water and fertilizer boasts of revolutionary transformation— the transformation from water delivery by channel to water delivery by pipeline, irrigating the field to irrigating crop, applying fertilizer on soil to plants, applying fertilizer and water in separation to integration. Therefore, some experts pointed out that the integrated management of water and fertilizer has marked a great technology for developing a high-yielding, high quality, efficient, ecological and safe modern agriculture, but is also the “No. 1 Technology” of a “resource-saving” and ”environment friendly ”modern agriculture.
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