Effect Of Seeding Date And Planting Density And Nitrogen Application In Jiangsu Huaibei Wheat Region

This test is in AK58, xu mai30and SuXu wheat1three varieties for the materials, in2009-2010in xuzhou city in tongshan area liuxin farm for broadcast sowing and quantity of the treatment of field experiment of nitrogen rates. Broadcast sowing amount in the experiment, two factors crack zone design, advocate the area for planting the processing, deputy district for sowing quantity processing. Nitrogen rates by a single factor randomized trial design. Research in xuzhou planting density and different in nitrogen rates to the influence of wheat grain yield, good quality and high yield explore under the condition of appropriate planting and density combination, puts forward a new cultivation measures. The main results are as follows:1. In xuzhou local ecological conditions, AK58varieties of the crop was planting and the influence of the amount was achieved significant level, including the influence of sowing reached a significant level, sowing quantity achieved a significant level. Planting season in October11,-October18, and between the volume to3.6million/ha was around, output can reach7500kg/ha. Xu wheat varieties of the crop was30planting and the influence of the amount was not significant, including the influence of sowing reached a significant level, did not reach the amount was significant level. Planting season in October7to23October, and between the volume to2.7million/ha was around, can realize the yield of7500kg/ha. Sowing or delay in advance are appropriate to increase rate, be helpful for the improvement of the grain yield. 2. Wheat with sowing stage continuously delayed emergence rate going down. Number per unit area with sowing stage continuously delayed first after a rise of the decline of the trend. With the increasing amount was a rising trend. Grain number per panicle with sowing stage continuously delayed first after a rise of the decline of the trend. With the increasing amount was a declining trend.-seed-weight with sowing stage constantly delay does not change significantly; But the same sowing period was-grain weight with increase of amount is declining trend.3. Broadcast sowing the change of the quantity of wheat plant form physiological characteristic produced the influence of different level. With sowing stage continuously delayed, and the whole development process of wheat is a declining trend. Dry matter accumulation with the amount of increase was a rising trend. Different sowing period work with each performance is differ, early with sowing stage continuously delayed, and the accumulation of continuous reduction, the flowering period after the first performance after rising trend of decline. The hybrid stem number with sowing stage postponed a falling trend; Along with the increase of planting a rising trend, but the hybrid stem number per drop. The leaf area index with sowing stage postponed a falling trend, are turning up performance after booting falling trend; Along with the increase of planting a rising trend4. Nitrogen on SuXu wheat1grain yield significant control effect. In this experiment condition, the ShiChun nitrogen285kg/ha, five oxidation2p75kg/ha, after105kg/ha, nitrogen fertilizer application proportion strategy:strong hybrid fat:filling fat:namely, fat for5:1:2:2, can test the grain yield of8475.1kg/ha, compared with a123.3%increase.5. Along with the increase of nitrogen, SuXu wheat1number per unit area a rising trend, grain number per panicle and-seed weight first after a rise of the decline of the trend. The growth period extended the time reduced growth, later growth time increased; Negatively correlated and stem tillers is the rising trend.