Double-target fertilizer application method

• Main Authors: XIE RULIN, OU HUIPING, LIU YONGXIAN, ZENG YAN, ZHOU LIUQIANG, HUANG JINSHENG, TAN HONGWEI
• Format: Patent
• Language: English
• Published: 25.03.2015
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; FERTILISING; FISHING; FORESTRY; HUMAN NECESSITIES; HUNTING; PLANTING; SOWING; TRAPPING

The invention provides a double-target fertilizer application method which is characterized in that the fertilizer application rate is determined according to the target yield of crops and the target contents of soil available nutrients to apply fertilizers. The double-target fertilizer application method comprises the following steps: determining the target yield to be achieved by the crops; determining the target content to be achieved by the soil available nutrients; obtaining the nutrient absorbing capacity of the crops/ton produced; determining existing soil available nutrient element contents; obtaining soil available nutrient buffer values; determining the weight of soil on a tillage layer/mu; determining coefficients of conversion from the elements to the nutrients; obtaining non-fertilizer nutrient effect values; obtaining a fertilizer efficiency rate; obtaining the contents of nutrients in the applied fertilizers; calculating the fertilizer application rate; finally apply the fertilizers according to the calculated fertilizer application rate. When the fertilizers are applied according to the fertilizer application method, a soil fertilizer supply level can be led to an optimal ideal state, so that not only can the crops obtain good quality and high yield, but alto the nutrient loss and the non-point source pollution caused by the fertilizer application can be relieved and avoided, therefore the double-target fertilizer application method has important significance in the development of China's agriculture.