RESPONSE OF GRAIN YIELD AND PROTEIN TO NUMBER OF BASIC SEEDLING AND RATIO OF BASE TO TOPDRESSING NITROGEN IN WINTER WHEAT(Tritcum aestivum L.)

Zhongren 1,a winter cultivar,cultivating with randomized block design with two factors,was used to study the effects of basic seedling and nitrogen application strategies on grain yield and protein components.The results showed that the plant height,spike length,grain yield,thousand-grain weight and test weight were significant difference among the treatments. The spike length and the number of grains per spike were positively correlated(r=0.931**).The spike length,spike kernels and the thousand-grain weight were reduced with the increase of the number of basic seedling,and they were significant difference among the treatments.It was the trend that the test weight was increased with the increase of the number of basic seedling.The grain yield was higher when the number of basic seedling was 450×10~4/hm~2.But there was no significant difference in the grain yield between the number of basic seedling 300×10~4/hm~2 and 375×10~4/hm~2,so the number of basic seedling could be 300×10~4～450×10~4/hm~2 in slightly late sowing date,according to actual sowing date and soil fertility.They were different in the response of the protein components to basic seedling,the Albumin and Globulin content were lower when the basic seedling was fewer,but the Glutelin and total protein content were higher.The Albumin,Globulin and Gliadin content were not significant difference among the treatments of the ratio of base to topdressing nitrogen application.The Glutelin and total protein contents were significant difference among the treatments of the ratio of base to topdressing nitrogen application,and it was the highest of the treatment of the ratio 3:7.There was of a trend that the total protein content was increased with the ratio of topdressing nitrogen application increase.