| Wide width sowing technology is proposed by Yu Songjiang academician,its purpose is to further expand the individual plant spacing,by changing the traditional sowing of the sowing for a more reasonable with the broadcast to achieve.After a large number of previous research contents and conclusions,four high-quality wheat varieties of Ximin 585,Wanmai 21,Zhengmai 7698 and Lankao 198 were selected to study the effects of four drilling widths and spacing intervals on the four wheat cultivars.The agronomic traits and yield related factors,in order to achieve the most suitable drilling width and spacing interval spacing configuration,to achieve the purpose of good variety with good law,so as to provide scientific guidance for production practice.The main results are as follows:1.With the increase of the width,the emergence rate also showed an increasing trend.With the increase of the spacing interval,the emergence rate showed a decreasing trend with the increase of the spacing.2.In different periods,variety,width and spacing interval can become the most influential factors of wheat stem count.Before the heading period,with the increase of the width,the number of stem per plant increased significantly,and the heading period was opposite;when the spacing interval was more than 23 cm,with the increase of the interval,the stem number also increased.3.The variety and drilling widths had some effect on the number of wheat secondary roots,and the influence of the spacing intervals was smaller.With the increase of the width,the number of secondary roots showed a tendency to increase,and when the width increased to 8cm,the number of secondary roots but a downward trend.4.The effect of three factors on plant height was in the range of variety> width >spacing interval,the plant height increased gradually with the increase of the interval.Varieties had the greatest effect on internode length,followed by amplitude spacing,and width had the least effect on internode length.With the increase of the spacing,the length of the first three internodes decreased gradually,and the length of the first three internodes increased from 6cm to 8cm.5.The varieties were the most influential factors of wheat yield per mu,grain number per spike,1000-grain weight and acreage per panicle.At the same time,the factors affecting the yield per ha were width,but had a great influence on the number of grains per spike,The factor is the width of the interval.And the number of ear spike increased gradually when the width increased from 4cm to 8cm,and the grain weight decreased gradually. |
