关键词: 徐海鸡, 徐海鸡, 蛋品质性状, 典型相关

Abstract: In order to establish regulation strategies on population control and nitrogen management for high yield and superior quality cultivation of wheat, a high yield wheat, Huaimai 33 was used to study the effects of sowing date, planting density and nitrogen management on grain yield and quality. The results showed that sowing date and density significantly affected grain yield and its components. Among the 5 sowing dates of October 1, October 11, October 21, October 31 and November 10, grain yield of October 11 sowing date was highest, and grain yield of October 1, October 21 was higher too, grain yield of October 31 was significantly reduced and grain yield of November 10 decreased mostly. The plant density of 225×104 plants?hm-2 treatment had the highest yield. Protein content enhanced with the increased density and the delay of sowing date. Increased nitrogen rate and dressing ratio during late growth period were benefical to increase grain yield and protein, wet gluten content and sedimentation value. Integrated analysis on grain yield and quality showed the appropriate management combination for high yield and superior quality cultivation of Huaimai 33 was sowing date of October 11, planting density of 225×104 plants?hm-2, nitrogen rate of 300 kg?hm-2 and dressing ratio of 5:3:2.