The Effect Of Sowing Date And Sowing Rate On The Yield And Quality Of Xinong 239 In Nanyang Area

Wheat is the main food crop in my country and occupies an important position in food production.The wheat supply and output of Nanyang City accounts for a large proportion of the wheat supply in Henan Province and even the whole country,making a great contribution to the national food security.Therefore,it plays a very important role in improving the wheat yield per unit area in Nanyang area.In order to study the suitable cultivation techniques of the new wheat variety Xinong 239 in Nanyang,Henan,this study was carried out in the experimental base of Nanyang Academy of Agricultural Sciences from 2019 to 2021.Xinong 239 was used as the experimental material,under 3 sowing dates and 4 sowing rates,the effects of different treatments on the growth and development characters,agronomic characters,dry matter accumulation,yield and quality of Xinong 239 were studied,and the optimal cultivation measures were explored in order to provide theoretical reference for the promotion of Xinong 239 in Nanyang,Henan.The main test conclusions are as follows:1.The sowing date is October 28,and panicle length and plant height can be significantly promoted when 160,000 basic seedlings per mu are used;when the sowing rate is 200,000 to 240,000 basic seedlings per mu,it is beneficial to increase the neck length of spike,but it is not conducive to the increase of the length of sub-spike.2.The maximum dry matter accumulation was when the sowing date was November 5;in each growth period,the dry matter accumulation can be significantly increased when the sowing rate is 200,000 to 240,000 basic seedlings per mu.3.When the sowing date is October 28,it is beneficial to obtain higher wheat yield,and the yield increase effect is relatively stable;when the sowing rate is 200,000 to 240,000 basic seedlings per mu,the wheat yield can be significantly increased.4.When the sowing rate was the same,with the delay of the sowing date,the number of grains per spike,the spike number and 1000-kernel weight all showed a downward trend;when the sowing date was the same,when the sowing rate is 120,000 to 160,000 basic seedlings per mu,it is beneficial to increase the number of grains per spike and 1000-kernel weight,but was not conducive to the increase of the spike number.5.When the sowing date was November 5th,the crude protein content,starch content,wet gluten content,stable time and grain sedimentation value of grains were promoted;when the sowing rate is 200,000 to 240,000 basic seedlings per mu,it is beneficial to increase the crude protein content and starch content of the grain.To sum up,in actual production,the best combination of sowing date and sowing rate is that the sowing rate is that the sowing rate is at the level of 200,000 to 240,000 basic seedlings per mu,and the sowing date is October 28,which can increase the yield of wheat;the sowing date is On November 5,the quality of wheat can be improved.