Relationships Between The LAI And Yield In Spring Wheat Cultivar With Different Eco-type In Heilongjiang Province

At present, there are some problems about the high-yield and high-quality of spring wheat inHeilongjiang Province. When the yield was high, the quality was low, and when the quality washigh, the yield was low. So in recent years, selecting the high-quality and high-quality springwheat become a research focus of many scholars. In this study, we selected7varieties of4different genotypes to analyze and compare. The purpose of this study is to select out high-quality,high-yielding varieties suitable to the region through comprehensive comparative study ofproduction in Heilongjiang Province, using4different genotypes of wheat varieties.Experiment data were collected during the growing season for2years (2011and2012) inHeilongjiang province.4different types of ecological seven varieties of whole growth period ofthe flag leaf area, the changes in the total area of dynamic analysis, as well as a combination offactors of economic production, grain-leaf ratio, harvest index, yield analysis and comparison, theresults showed as follows.There are obvious differences of total leaf area and flag leaf area between differentvarieties.Total leaf area, flag leaf area changes are in the highest two categories of varieties of dryfertilizer type and drought, and significantly higher than that of water and fertilizer and moisturevarieties. The Decline and Fall of the speed of the leaf area leaves of different ecological typevarieties opposite trend. The different types of varieties of main stem function in flag leaves staygreen while drought the longest, shortest followed by dry fertilizer, fertilizer type; tiller leaf areachanges of the curve, dry fertilizer type, fertilizer type, moisture varieties tiller leavesthe areadecay faster, slower drought-resistant varieties. Intensity of main spike grain filling differentecological type varieties for drought-type> dry fertilizer> moisture> fertilizer type, maximumfilling rate time evaluation: dry fertilizer> Drought> fertilizer> moisture.Different ecological type varieties of grain-leaf ratio, specific leaf weight, harvest index andyield levels relationship. Grain-leaf ratio followed by drought-resistant, water and fertilizer, dryfertilizer and moisture; harvest index followed by drought and moisture, water and fertilizer, dryfertilizer type.The different characteristics of different ecological types of plant growth and development,there are significant differences between growth stages and developmental structure drought anddry fertilizer type late-maturing varieties, fertilizer type moisture in early maturing varieties. Dryfertilizer and drought-resistant varieties of early development slow in the latter part of normaldevelopment; fertilizer and moisture varieties various stages of development were faster. Tilleringcharacteristics there are some differences, drought, dry fertilizer type varieties mainly moderatenumber of tillers performance prominent big tiller Zhuang tiller productivity by multi-tillers,fertilizer type tiller, Berberis based moisture tillering performance is the worst.The test results showed the growth and yield components: dry fertilizer, drought resistance varieties in the production of a large area of the development of the individual to achieve a highyield; while water and fertilizer and moisture varieties require excellent fertilizer conditions, togroups of more thanThe spike multigranular to achieve a high yield.By compare the4genotype of wheat, and finaly we selected the Dry fertilizer type andDrought-type can be growing areas in Heilongjiang province.