Study On Key Cultivation Techniques Of Demeiya 3 In 291 Farm

Agriculture has always been the primary industry in China,the basic industry in China and plays an important role in the development of our national economy.In recent years,with the development of economy,the continuous improvement of people's living quality,people demand for agricultural production is also growing,but the limited farmland,corn planting area is not easy to expand.Therefore,the development of maize production technology,the improvement of maize production level,and the continuous improvement of single yield per unit area have become the main way to increase the total maize production.This article is to maize varieties,Demeiya 3 as an example,the United States and Asia through studying the relation between density and Demeiya 3 fertilization level,reasonable control technology,the leaf age of fertilizer technology research,guidance of maize cultivation of related operations,which will provide a scientific basis for the actual production application,promote the increase production of corn,steady development.The relevant research results are as follows:(1)Through comparative experiments on the planting density and fertilization magnitude of Demia 3,it was found that the planting density of maize was 82,500 plants/hm~2.And the fertilization rate of 315kg/hm~2 is the ratio of the optimal density to the fertilization rate.(2)Through the United States 3 different leaf ages top application on maize yield effect of contrast test found that maize in 7 show reasonable leaf stage,topdressing urea can significantly improve the maize yield characters,compared to a one-off fertilization produce more than 27.22%.(3)The matching effect of migao and jade gold is more significant than that of single use.Spraying chemical control agents can promote early maturity,reduce plant height,spike height,and resist lodging,so as to achieve the goal of increasing yield and stable yield in the process of corn production.The yield increased by 0.15l/hm~2,1.5l/hm~2,and 5.27%for the control of spraying water.