Effects Of Different Organic Materials Returning On Soil Fertility And Maize(Zea Mays L.)Growth And Development

At present, in agricultural production has been gradually recognized that chemical fertilizer and organic material with the effect of Fertilization on soil fertility and crop yield increase, both at home and abroad about chemical fertilizer of organic materials on soil physicochemical characteristics of crop and a lot of research has been carried out in many aspects of growth and development, study, species diversity of organic materials, but mainly by livestock manure and straw processing application of organic materials is the most common, however, affected by climate conditions, different regional geographic characteristics, soil properties and crop planting patterns, the results are not the same. Jilin province is located in the hinterland of Northeast China, Sauteed Sweet Corn with Salted Egg Yolk with suitable climate, fertile soil,play an important role in the stability of the national maize production. Therefore, the Jilin province of central Gongzhuling corn producing area of organic fertilizer experiment based on the field experiment and laboratory analysis of a combination of, the system of different manure,effects of different straw processing organic materials returning on growth and yield of maize,clarify different types of organic materials on soil fertility, and increase the yield of corn and promote agricultural sustainable utilization provide theoretical basis. Main research conclusions are as follows:Livestock and poultry manure organic material into the soil provide a good source of nutrients to year crops and in increase soil nutrient content at the same time, in order to increase the yield of maize. Chemical fertilizer plus manure returning to increase soil organic matter, soil total and available nutrient content of the best compost times, the effect of pig manure and cow dung relatively low.Fertilizer with four kinds of livestock and poultry manure organic materials returning to field on corn yield to enhance performance for, chicken manure > pig manure > humic fertilizer> cow dung heap; with fertilizer compared, organic materials processing under 4 years corn yield average values increase amounted to 6.5%, 4.5% and 2.3% and 4.2%. In addition, chicken manure treatment is more conducive to the accumulation of nutrient contents of nitrogen,phosphorus and potassium in maize plants.Compared with single application of chemical fertilizer, chemical fertilizer with straw processing of different organic materials can effectively increase the soil organic matter, soil total and available nutrient content, but soil nutrient index of black carbon, straw and heap humic fertilizer three straw processing organic materials returning in response to treatment is not consistent.Fertilizer with charcoal, straw and heap humic fertilizer three organic materials returning conditions 4 years corn yield average 11865kg/hm~212519kg/hm~2 and 12309kg/hm~2, respectively,the difference is not obvious. In addition, the straw is conducive to the accumulation of maize plant nitrogen and potassium; compost and more to increase the content of phosphorus in maize plants.