The Present Situation Of Soil Formula Fertilization Technology Popularization In Zhaodong City And The Analysis Of Typical Regional Formula Fertilization Test

Scientific fertilization is the main scientific and technological way to produce excellent,high-yield,high-efficiency crops and to achieve sustainable development of agricultural production.The most important form of realization of scientific fertilization is to carry out soil testing and formula fertilization.Now the annual utilization rate of fertilizer in China is only about 30 percent on average.There are many reasons for the low utilization rate of fertilizers,but the unreasonable fertilizer dosage and fertilization ratio are the main factors.Soil testing and formula fertilization is an important way to improve the fertilizer utilization rate in soil.This paper analyzes the geographical conditions and planting types of Zhaodong in Heilongjiang Province,analyzes the current status of soil testing and formula fertilization technology promotion in Zhaodong City.In view of the misunderstanding of farmers'understanding in the promotion,lack of technical norms,imperfect supervision and management system,lack of innovation in the promotion model,the"short board"that restricts the effective and effective promotion of technology,and absorbs the advanced development experience of other provinces.Based on the actual situation of Zhaodong,Suggestions and countermeasures have been put forward in promoting the construction of technical systems,standardizing soil samples,scientifically and rationally formulating fertilizer formulas,diversifying the production of formula fertilizers,improving the supply chain,strengthening publicity,strengthening supervision,extending the promotion model,providing theoretical basis and technical reference for local agricultural production.Taking the soil testing and fertilization experiments of the three test sites in Zhaodong in 2014 and2016 as an example,the maximum yield of corn in three test sites was 136.7kg/ha through the“3414”complete test program.150.8kg/ha,pure phosphorus 94.4kg/ha¹05.3kg/ha,pure potassium 101.9kg/ha,N:P₂O₅:K₂O ratio 1-0.91:0.69-0.63:0.68,the highest corn yield,indicating nitrogen fertilizer Corn yield has the greatest impact,followed by potassium fertilizer and phosphate fertilizer.The combined application of NPK fertilizer can significantly increase the utilization rate of fertilizer.When simply increasing the amount of a certain fertilizer,its own fertilizer utilization rate will decline.The balanced fertilization experiment in three locations in two years shows that there is still a lot of space in the promotion of soil testing formula in Zhaodong,which provides experimental support for promoting soil testing and formula fertilization technology.