Study On The Effects Of Agricultural Characters And Physiological Traits Of Different Wheat Varieties Under Controlling Water

Drought is a main factor to restrict Chinese agricultural sustainable development. A suit of cultivating system of high yield, high quality, and resistant drought must be formed in order to achieve yield potential of resistant varieties and enhance using efficiency of natural precipitation. With the changes of natural and produce conditions, new varieties emergence increasingly, it is important that we study resistant drought and saving water index systems of different varieties, excavate approach of high yield and high efficiency of winter wheat. This test taken combination of field testing and indoor analysis methods at the first farming station of Northwest A & F University. Yield performance quality characteristics, physical characteristics and dynamic of water utilization were measured and analyzed through the group dynamics of different genetic wheat, XN9766, XN794, XN580, XN1403 XN1726, it provide a theoretical basis for the areas of agricultural production and technical support. Test results were as follows:1. The numbers of population and the dynamic change of leaf area index all exhibited "s" shaped curve under irrigation and no irrigation. The group stems of different varieties and rate of spike at irrigation were larger than no irrigation. Rate of spike of Different varieties had certain difference due to moisture menace, but the overall trend was that rate of spike were higher at irrigation than no irrigation, XN 580'rate of spike were most. Between the ears grains were also obvious difference, XN 794'was most under irrigation. The thousand grain weight between different varieties. From the scope of rising yields, XN79 was largest, it illuminated that XN794 was suitable for irrigable land, and poorer resistant than other varieties.2. The rule of accumulation of different varieties dry matter was consistent, accumulated more slowly at the earlier period and accumulated rapidly after turning. Dry matter running and rate and the removal rate of different varieties have certain differences, but the general rules as follows: stem> leave> vagina. Dry matter of nutritional organ was transferred to...