Relationship Between Main Agricultural Traits And Yield In High Latitudes

It is important role of soybean production in Heilongjiang agriculture. The selective breeding ofhigh yield varieties is an important factor of soybean production, especially, to the areas of highlatitude that is the main production area, located in high yield varieties And what's more, theyield of the zone is average, and it is urgent to breed selectively high yield soybean varieties.In order to study the correlation between soybean yield and main agricltural characters, theexperiment that is designed 30 kinds of soybean varieties uses Heihe 18, seriously selected indoorsand analyzed, as control group when it is carried out in field. All those jobs of the experiment are inorder to seek after the main agricltural characters of soybean yield influencing the fourthaccumulative temperature zone, located in Heilongjiang, and to provide theoretical bases of highyield breeding of soybean in the zone.The results of analysis of variance show that the yield difference achieves most obvious levelamong varieties of, soybean.The variation quotiety analysis shows that it is more obvious of the variation quotiety ofBranches, stem diameter, stem length, grains of individual legume, height of first legume, grainsof individual plant and these should be chosen to some extent. On the contrary, it is in a less range of thevariation quotiety analysis of characters, of prophase anaphase and, entire prophase period and theseshould be chosen earlier.Grey theory analysis shows that biggish Grey correlative degree is mainly based on thefollowing situation, prophase prophase, yield of individual plant, grains of individual legume, nodesof caulis, grains of individual plant, stem diameter.Correlative analysis shows that it is the most important agricultural character of prophase prophase,yield of individual plant, grains of individual legume, grains of individual plant, considered charactersof stem diameter, stem length, branches.Drift diameter analysis shows that the characters of grains of prophase prophase, legumes ofindividual plant, grains of individual legume, prophase anaphasehave more obvious direct effects bysub-district yield.Based on the above kinds of analyzing methods, the following conclusions can be concluded, thatis, it is a main effect on agricultural characters of prophase prophase, yield of individual plant, grainsof individual legume, grains of individual plant in the fourth temperature zone. They should be chosenin advance. At the same time, it should be given attention to, the mutual effects of characters and others,and thus a new soybean variety can bred successfully, adapted to in the fourth accumulativetemperature zone, located Heilongjiang province.