Effect Of Different Organic Manure And Chemical Fertilizers Combined Application On The Soil Nitrogen Of The Transformation, Migration And Crop Yield

Because of effect of increasing input do not get by inputting a great deal N fertilizer in the North dry land crops system. This paper study different organic fertilizer and chemical fertilizer how infect the changing and migration of soil chemical nitrogen on the same infield on North dry spring corn - soil system. This study confirm the doable and economical fertilizing project through the comprehensive evaluation of effect for crop growth and output on the way of inputting organic fertilizer and chemical fertilizer together.China has become the largest quantitative nitrogen country in the world; the application rate per unit area is also higher than the world average, while the operating factor of nitrogen fertilizer is only 30-50 percent, and about half of the nitrogen into the soil loss away by various channels. How to fertilize various fertilizers reasonable and scientific and the influence of fertilizer to the soil physical and chemical natures, the study of the soil nitrogen transformation and migration has become the hotspot of social studies. With organic manure and chemical fertilizers applied in recent years is preferred method of fertilization, in organic farming should attach the importance to the rational application of fertilizer, with the application of chemical fertilizers, based on planting local characteristics and fertilizers situation, choose the experiments factor, through the establishment of the organic fertilizers and chemical fertilizers on the yield and quality analysis of the role model, In accordance with the principle of high yield and high efficiency, Selected organic manure and inorganic fertilizer application with the optimization programmer, to achieve the objective of high yield.Through analyzing three different sources of organic fertilizer, we all learn that the contribution of the treatment of CK for soil total N lower than that of whether alone fertilizer or combined fertilizer. Compared the treatment of only input chemical fertilizer, that the soil total N increase in all treatment of combined fertilizer. In the results, the soil total N increase 2.8 percent in treatment of deer manure, the treatment of cornstalk is 4.22 percent, the treatment of leaves is 5.66 percent. The effect of the treatment of leaves is great for soil total N.Compared the alone fertilizer and combined fertilizer in all treatment, soil available N in the treatment of combined fertilizer is obvious increase. In the all treatment of inputting organic fertilizer, the soil available N is higher than the treatment of CK, and the extent of increasing is different. Then the increment of leaves is 16.1 percent, CK is 4.8 percent, leaves treatment > deer dung treatment > Cornstalk treatment > CK. The results indicate that the soil available N will increase if we input the organic fertilizer, and the effect is better in after date. The soil NO₃-N concentration reduce along with the increasing of depth of soil. In this treatment, because of not imputing N fertilizer in the treatment of P,K,PK, the soil NO₃-N concentration is very few. The soil NO₃-N concentration in the treatment of NPK is lower than that in the treatment of N.That indicate when inputting N,P,K fertilizer together, the soil NO₃-N concentration will reduce, because two elements of P and k can advance the using rate of N fertilizer on crops and reduce the migration of soil NO3-N to the depth of soil. The results also indicate that organic fertilizer can improve the utilization of N fertilizer and reduce the accumulating of soil NO₃-N. Through the study of NH₄-N in the soil section from 0 cm to 90 cm, the soil NH₄-N is reduce. The content of NH₄-N in treatment of inputting N fertilizer is higher than CK and no obvious changes. The changing rule indicate that the ability of nitration is very strong. And after inputting the organic fertilizer, the content of NH₄-N are not change. The content of NH₄-N can not reflect the level of available N fertilizer in soil. But N is the very important on growing of crops.Combined application of organic manure and the general promotion of the growth of corn, base on the reproductive process, The process of fertility treatment compared with the control is not obviously increase, leaves treatment the processing plant height and leaf area of the largest rate of increase, deer manure on the fertility of corn that corn ear length, mealiest circumference, grain and 100-seed weight with a few notable improvement in combined application processed, compared with the control, deer manure and NPK combined application processing significantly The promotion of the reproductive process of maize, leaves and NPK combined application processing for the obvious corn plants and leaf area of growth, leaves and NPK combined application on the reproductive status of corn has increased the most obvious. Three different sources of organic manure and their combined application also effectively improved the economic output of maize. With the same single application of organic fertilizer compared with Oxfam's economic output have to deal with much higher than the single application processing.