Effects Of Different Sowing Methods And Planting Densities On Group Quality And Yield Components Of Winter Wheat

In this paper,in the period of 2015-2016,the author adopted the method of planting in the north of Henan Province,which is not suitable for the sowing method,the sowing rate is blind,the population structure is unreasonable and the output is not coordinated.(A)and sowing(B)two-factor split-zone test,with mechanical ditch(A1),mechanical wide-banding(A)and sowing(B),respectively,10kg(B1),12.5 kg(B2)and 15 kg(B3)of the three kinds of sowing for the main treatment,the main study The effects of different sowing methods and sowing combinations on the emergence,population structure and material production of Winter Wheat were studied and the best sowing techniques were selected and screened out.The main findings are as follows:1.Planting of Winter Wheat under different manner ears development groups showed A2> A3> A1,wide uniform sowing machinery(A2)to help improve the population spike of Winter Wheat,sowing methods impact on the overall population of Winter Wheat tillers and plant height and Not obvious.The number of tillers in the largest population of Winter Wheat was proportional to the sowing rate,and the panicle number and plant height of Winter Wheat were inversely proportional to the sowing rate.The population quality of Winter Wheat is mainly affected by the seeding method.2.Compared with different sowing methods,mechanical wide-banding A2 is more favorable for the accumulation of dry matter in Winter Wheat.Compared with different sowing treatments,the suitable sowing amount B2 is more favorable for the accumulation of dry matter in Winter Wheat.The LAI of Winter Wheat increased from winter to jointing,and the change of LAI size increased with the increase of sowing rate after jointing.3.The results showed that there was a significant effect on the final yield,and the effect on seed yield was not significant.Compared with the different sowing treatments,the number of spike per unit area of Winter Wheat was the highest,and the grain number per spike and yield were the highest,and the grain weight was inverselyproportional to the seed yield.The sowing methods and sowing yield had different effects on the Winter Wheat yield.4.The results showed that the number of grains per spike of A2B2 was 47.28,the grain weight was 46.69 g,and the yield was 6936.87 kg / hm2,the highest was the highest in the Xinzheng test site.