Investigation On Population Characteristics Of Typical High Yield Wheat Demonstration Field And Cultivation Technique Upgrade In Guanzhong Region

As an important functional area for grain production in China,the Guanzhong area in Shaanxi Province is of great significance for ensuring regional food security.Therefore,it is of great significance to solve the grain problems in Shaanxi Province to solve the grain problems in Guanzhong region.The average yield of wheat in the Guanzhong region is relatively low,but the average yield per high-yielding demonstration field is extremely high.Aimed to eliminate the yield difference between high-yielding demonstration fields and production field,we increased the yield of wheat in Guanzhong region.This study selected 11 typical high-yielding demonstration fields in the Guanzhong region,investigated the cultivation techniques and wheat population quality used in the Guanzhong region,and tried to find the commonalities among the different high-yielding groups,laying the foundation for future high-quality wheat promotion in the Guanzhong region.basis.The final findings are as follows:(1)High-yielding demonstration fields in different regions of the Guanzhong region vary in the choice of species.Based on the differences in the natural environment of various regions,the temperature in the central and eastern regions of the Guanzhong region is relatively high,with both semi-winter and weak-weak and weak winter varieties,such as Xi Nong 979,Xiao Wei 22,Wei Long 169,etc.The lower ones will choose the varieties with better cold resistance in winter,such as Xiong 822 and Xi Nong 9871 etc.And the regions near the mountainous regions will choose better resistant varieties,such as Xiong 3517 and Xiong 822 etc.(2)The high-yielding demonstration fields in different regions of Guanzhong region all have a good "source-sink-flow" structure.The dry matter distribution in the high-yielding demonstration fields in different regions is probably as follows: flowering stage ear: leaf: sheath: stem = 1:1:1:2,maturing dry matter distribution ear: leaf: sheath: stem = 10:1:1: 2.The correlation analysis showed that there was a significant correlation between the dry matter weight of various organs at different stages,which meant that the dry matter transport between various organs in the high-yielding population was very smooth.(3)High-yielding demonstration fields in different regions of Guanzhong region have good population balance.The dry matter weight of each individual plant in the high-yielding demonstration fields in the high-yielding demonstration fields at the flowering and mature stages had a small fluctuation.The plant heights and internode lengths of individual plants in the high-yield demonstration plots of various regions have a very high degree of uniformity,and the plant height index is about 0.55.(4)Key cultivation techniques for high-yielding demonstration fields in different regions of Guanzhong still have room for improvement.In the central region,the panicle area per unit area,grain number per panicle,and leaf area at the flowering stage are small.It is recommended that the development of semi-finished sowing and fine nitrogen sowing techniques should be combined with advancement of the nitrogen fertilizer transfer technology.At the same time,the sowing date should be advanced within the allowable range;The population balance is poor,and it is recommended that the combination of wide precision seeding and deep ploughing techniques;the Lantian County in the south of Qinling Mountains has a small unit area per panicle,which can increase the sowing amount moderately,and the low 1000-grain weight in the reclamation area can increase the proportion of topdressing.In the western region,the panicle area per unit area is low but the sowing volume is not low.The irrigation time can be advanced in advance to ensure the spike rate.