Effect Of The Combination Of Density And Fertilizer On The Yield And Quality Of Wheat With Different End Use

Due to its superior natural conditions,Yangzhou is suitable for the cultivation of wheat,but the current wheat production generally has problems such as poor yield and quality stability.Therefore,it is very important to ensure the coordinated development of wheat yield and quality in wheat field production,which requires coordination.Good basic seedlings and nitrogen application rates for different gluten wheats can ensure that the wheat yield is stable and the quality of the wheat can also be of high quality.This experiment uses high-quality strong-gluten wheat Zhenmai 12 and high-quality weak-gluten wheat Ningmai 13 as the test materials.By constructing wheat populations under different combinations of basic seedlings and nitrogen application rates,the effects of different density fertilizer combinations on wheat yield structure and quality formation are studied.Analyze the difference in agronomic traits,grain quality,nitrogen accumulation,soluble sugar and starch content,and anti-aging enzyme activity under different yield levels,and explore the field cultivation mode of high-quality and high-yield groups of strong-gluten wheat and weak-gluten wheat.It is expected to provide theoretical basis and technical support for realizing the field cultivation mode of strong and weak-gluten wheat.The main results of the test are as follows:1.Increasing basic seedlings will increase the number of ears,grains and 1000-grain weight of Ningmai 13 and ultimately increase the yield of wheat.However,after the basic seedlings exceed 240×104/hm2,continuing to increase the basic seedlings will lead to the decline of the number of ears and grains of wheat,and ultimately lead to a decline in wheat yield.The number of ears,grains and thousand-grain weight will also increase with the increase in nitrogen application rate.However,if the nitrogen application rate exceeds 240 kg/hm2,the nitrogen application rate will continue to increase,and the yield of wheat will decrease.Thousand-grain weight will decrease,which will eventually lead to a decline in yield;the increase in the three elements of Zhenmai 12 will eventually increase the yield of wheat.However,the decrease in the number of ears and grains of wheat beyond this range will eventually lead to a decrease in the yield of Zhenmai 12.2.The leaf area index,dry matter accumulation,stem and tiller dynamics and SPAD value of Ningmai 13 population maintained medium density>high density>low density,which reached the maximum value at 240×104/hm2,which was lower than or exceeded this value Will lead to a decrease in population quality.The effect of nitrogen application rate on agronomic traits is that under the same density conditions,the population quality of the medium nitrogen application treatment will be higher than the high nitrogen application rate and the low nitrogen application rate.Strong-gluten wheat Zhenmai 12 under the same nitrogen application rate,the agronomic characteristics of Zhenmai 12 under the medium density treatment are higher than the high density treatment and low density treatment;the effect of nitrogen application rate on the agronomic characteristics of Zhenmai 12 is under the same density condition.The agronomic characteristics of the treatments with high nitrogen application rate were higher than the treatments with medium and low nitrogen application rates.3.Under the same nitrogen application rate,the grain protein content,components and wet gluten content of Ningmai 13 under high-density conditions are higher than those of medium and low-density treatments,and bulk density and sedimentation values are lower than those of medium-density treatments under high-density conditions.Hardness and flour extraction rate are shown as low density treatments higher than medium and high density treatments;wheat grain protein and its components and its components and wet gluten content,sedimentation value,bulk density and flour extraction rate are shown as high nitrogen application rates The hardness is opposite for the treatments larger than the medium and low nitrogen application rate.Zhenmai 12 grain protein and its components,wet gluten content,sedimentation value and hardness under the same nitrogen application rate,high-density treatment are lower than medium and low-density treatments,and grain bulk density reaches the highest under medium-density treatment.The rate is the largest under high-density processing.The protein and its components,wet gluten content,hardness and sedimentation value of Zhenmai 12 showed that the high nitrogen application rate was higher than the medium and low nitrogen application rate.The bulk density and powder extraction rate are the highest under the nitrogen application rate.The flour quality of wheat will also change due to the change of density and fertilizer combination.The RVA characteristics of Ningmai 13 and Zhenmai 12 under the same nitrogen application rate,the low-density treatment is higher than the middle and high-density treatment,and the density At the same time,the viscosity parameters will be higher than medium under high nitrogen application rate.Viscosity parameter under low nitrogen application rate.Therefore,the density and fertilizer combination mode can adjust the flour quality of wheat to achieve high quality.4.The performance of Ningmai 13 anti-aging enzyme activity is that under the middle density treatment,the CAT,POD,SOD and flag leaf and grain GS enzyme activities are higher than the high and low density treatments,the MDA content is the opposite,and the middle density treatment is lower than the high.Low density processing.Under the same basic seedling conditions,the CAT,POD,SOD,flag leaf and grain GS enzyme activities under the medium nitrogen application rate were higher than the high and low nitrogen application rates,and the MDA content also showed the opposite trend.The performance of anti-aging enzymes in strong-gluten wheat under medium-density treatment,CAT,POD and SOD,flag leaf and grain GS enzyme activities are all higher than those of high-density and low-density treatment,while MDA content is higher.Under low-density processing conditions,it is greater than medium-density processing.Under the same density conditions,the enzyme activities of CAT,POD,SOD,flag leaf and grain GS under the high nitrogen application rate are higher than those of the medium and low nitrogen application rates,and the MDA content is shown as low nitrogen application rate treatment>medium nitrogen application rate treatment>high Nitrogen application rate treatment.5.Under the specific climatic conditions of this experiment,the construction of high-quality and high-yielding groups of different gluten wheats was initially formed.The requirements for high-quality and stable yield of weak-gluten wheat Ningmai 13 are to appropriately increase planting density and reduce nitrogen application rate.In the specific climate of this experiment Under the same conditions,the high-quality and stable-yield cultivation measures for Ningmai 13 are:planting density 240×104/hm2,nitrogen application rate 180 kg/hm2,nitrogen fertilizer operation 7:1:2:0 dense fertilizer combination,and combined with phosphorus and potassium 90 kg/hm2,one-time bottom application with base fertilizer.The high-quality and high-yield conditions for strong-gluten wheat Zhenmai 12 are to appropriately reduce the planting density and increase the nitrogen application rate to achieve high-quality and high-yield.Under the experimental conditions,the planting density is 240×104/hm2 and the nitrogen application rate is 300 kg/hm2.The cultivation mode of nitrogen fertilizer management 5:1:2:2.With the combination of phosphorus and potassium fertilizers of 150 kg/hm2,5:5 application of base fertilizer and jointing fertilizer,the yield and quality of Zhenmai 12 can be developed in a coordinated manner.