氮素水平对单作和间套作小麦玉米品质影响的比较研究

以间套作小麦玉米、单作小麦和单作玉米为研究对象 ,研究了在间套作和单作条件下氮素水平对小麦、玉米品质的影响。结果表明 ,间套作小麦和单作小麦相比具有明显的间套作品质优势 ,且间套作小麦表现出明显的边行品质优势。在相同施氮水平下 ,间套作小麦的蛋白质含量、沉淀值、干、湿面筋含量等品质指标均明显高于单作小麦 ,施氮水平显著改善单作和间套作小麦的品质指标 ;而间套作玉米和单作玉米相比则表现出明显的间套作品质劣势 ,在相同施氮水平下 ,间套作玉米的蛋白质含量、脂肪含量、百粒重等品质指标明显低于单作玉米 ,施氮水平显著改善间套作玉米的蛋白质含量、脂肪含量、百粒重等品质指标。

Effect of nitrogen levels on quality of wheat/corn monocropped and intercropped

This study compared the effect of nitrogen levels on qualities of wheat / corn monocropped and intercropped. The results obtained were as follows: 1. There were significant quality advantages of intercropped wheat compared with monocropped wheat. Under the same nitrogen level condition, protein content, sedimentation value, dry gluten and wet gluten of intercropped wheat were increased by 5.1%, 10.8%, 3.7% and 5 3%,respectively , than that monocropped wheat. Moreover, the protein content, sedimentation value, dry gluten and wet gluten in the border rows of intercropped wheat were higher than those of inner rows, respectively. 2. The effects of nitrogen levels on protein content, sedimentation value, dry gluten and wet gluten of both intercropped and monocropped wheat were evident according to statistic analysis. 3. There were significant quality disadvantages of intercropped corn compared with the monocropped. Under the same nitrogen application condition, protein content, oil and one hundred grain weight of intercropped were decreased by 15.3%、1.8% and 11.1% ,compared with monocropped corn. The effects of nitrogen levels on the contents of protein, oil and one hundred grain weight of intercropped corn were significantly improvement.