The Effects On Soil Characteristics And Crop Yield Of Corn-soybean Intercropping Model

Intercropping is an intensification of agricultural production and farming methodscommonly used in the region, the use of this approach can be achieved within a certain timeand a certain area of land to get two or more crops of economic output purposes, reduced therisk of adverse ecological impact and bring to market, but they can significantly reducefertilizer pollution on the ecological environment, full and rational use of limited naturalresources. Intercropping system in which a variety of legume intercropping with grassy playin the Chinese tradition of maintaining agricultural production and ensure food securityNitrogen balance dual role.In this study, corn and soybean intercropping system as a test object, set up in the fieldbetween the rows of corn planted soybeans, corn strains between soybeans, corn rowsbetween the lines between soybeans, corn and soybean monoculture for a total of fivedifferent single multiple cropping randomized block design, two sets of duplicate, focused onthe effects of different multiple cropping corn and soybeans at different times of thephysiological and biochemical indicators of soil moisture, nutrients and other yieldcomponents. The results showed as follows:1, The results indicate that corn and soybean intercropping system on the moistureabsorption and utilization was stronger than monoculture, soil water storage at each harvestbefore sowing is lower than100mm or so, one of the growing inter-row cultivation isrelatively modest between modes, row planting soybean processing plants are the largestdemand for water, it is prone to competition, unfit and grow together. The water absorptioncapacity among strains of corn planting process stronger than soybeans, easy to suppress thegrowth of soybean.2, In terms of the use of ammonium nitrate nitrogen, soil nitrate content in differentcropping patterns with complex soil depth increases from21mg/kg first reduced to about18mg/kg, then gradually increased to about15mg/kg while intercropping soybean seeddensities higher nitrate content than the same period of processing corn monocultureimproved1~5mg/kg. Use of soil available phosphorus, the data show jointing stage of eachtreatment is available phosphorus absorption and utilization of active period between eachtreatment intercropping of available phosphorus content of about40mg/kg level, but theoverall content of each treatment period lower than monoculture2~5mg/kg so. Utilization of potassium in the soil, from an average basal levels after administration of73.55mg/kgcontinue to reduce, to harvest rose to about76mg/kg, different treatment for each period,intercropping patterns of each soil potassium content than monoculture treatment which wasapproximately3mg/kg.3, Intercropping on crop yield two goals will result in varying degrees of impact,soybean affected some large, cut a500~1000kg/hm2, analysis mainly due to the large leaveslight shielding corn, soybean affects photosynthesis role, while corn strong roots absorb morenutrients in nutrient competition. Theoretical yield of corn and soybean processing under theinter-row cultivation increased by42.12kg/hm2and75.92kg/hm2, is handling severaldifferent planting patterns among the best.