Research On Techniques Of Plant Population Configuration And Benefits Of Cropping Patterns On Maize/Soybean Relay Intercropping Systems

In this study, Mianmai 367, Favorita, local peas, beans before the material is, intercropping Chuandan 418, Nandou 12, using randomized block design, in Sichuan Province, the modern food industry demonstration base (Renshou) were, intercropping form a soy acreage currently southwest hilly upland larger four relay-planting three crops start to compare the economic and ecological benefits, and reasonable for several winter crop soybean field configuration and Nitrogen Management Ⅱ-from different before and corn Items core supporting technologies to carry out research to high-yield and efficient southwest hilly dry multiple cropping provide a theoretical basis and technical support, so as to improve fertilizer use efficiency, increase farmers’ income, food security and other purposes. Through two years of field trials, the results showed that:1. Four kind of three crops intercropping planting patterns, from net income of view, to silkworm/maize/soybean maximum efficiency, followed by pea/maize/beans, potato/ maize/beans, the minimum benefit for wheat/maize/soybean model. And when the beans to field 2 line configuration, soybean minus the maximum nitrogen fertilization conditions as 21,662.25 yuan/hm2. From the point of view of the influence of soil nutrients, the former as nitrogen, potassium accumulation when compared with the other three before the beans have significantly increased the amount of nitrogen accumulated relatively peas, potatoes, wheat increased by 12.7%,23.8%,45.9% respectively, K an increase of 31.8%,20.0% and 33.1%.2. In the corn growth stage, before the configuration quite different effects on the growth of maize. Before the corn before the harvest and restore growth, both before as beans, corn and dry matter accumulation was significantly higher than other treatments, compared with the same growth stages of wheat as before treatment were higher 58,7%,24.5%,40.7 height high cm, an average increase of stem diameter 4.67mm, when the former as beans, corn top light transmission rate was significantly higher than other treatments, compared with wheat before the high 0.96. Effect of increasing the number of rows before the configured number of corn grain and grain weight difference between treatments was significant, except before the configuration for the next beans, before as wheat, peas and potatoes are expressed as the number increases the number of lines of maize grain and grain weight increase. As wheat before treatment, bald long before treatment was significantly higher than the other, the impact on spike length, the same before, the difference was not significant, broad line 2 before treatment was significantly higher than the other, as 8556.8kg/hm2, respectively,15.1%,12.2% and 22.6%. With the increase of 3 lines than rows, yield of corn peas, beans and potatoes before the process of not significant, but the corn yields rise. Wheat was significantly lower than the other four rows before processing. Description in different process before adjusting lines than before, help to increase corn production.3. Front handle as peas and beans, compared with the predecessor of wheat, soybeans improved stem diameter, number of branches and R2, R8 of dry matter accumulation per plant, reducing the height, which, before the stems as soy bean processing thick, branches, dry matter accumulation per plant than before as a high 3.5% of wheat processing,5.9%, 5.4%, compared with wheat production is also high before the average 197.94kg/hm2, before pea processing soybean production, followed by wheat before The lowest average yield of soybean; soybean average height at each before the treatment, the number of branches with increasing nitrogen rate increases, but the processing performance of each of nitrogen under different predecessor inconsistent beans before processing, reducing nitrogen Nitrogen Soybean plants high, branches and plant dry matter accumulation were higher than zero N treatments of 9.9%,7.5%,0.2%. Yield is also based on 30 N kg/hm2 was the highest, while wheat and potato processing before production is increased with the amount of nitrogen and enhanced in order to reduce nitrogen composition soy beans the highest yield. Different treatment before and nitrogen fertilization soybean aboveground nitrogen accumulation vary, soybean N accumulation before the performance as bean> pea> potato wheat and soybean aboveground nitrogen accumulation increased gradually with the growth. Namely:before the beans and applied 30 N kg/hm2 favor when maize/soybean intercropping system improved agronomic traits, shoot absorbing nitrogen, income increase its dry matter accumulation and yield.