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本研究通过在栗钙土上设置田间试验。研究结果表明:开花期小麦不同器官中氮的积累量随着施氮量的增加而增加,以叶片中积累的氮素量最高,其次为穗>茎>叶鞘,但当施氮量达到450kg/hm2时,单作小麦叶片和间套作小麦叶鞘、茎、穗氮的积累量减少,而且间套作小麦相同施氮量各器官的氮素积累量大于相应单作小麦各器官的氮素积累量。成熟时小麦各营养体氮积累量随着施氮量的增加而增加,颖壳+穗轴氮积累量最多,其次为茎>叶鞘>叶;成熟时籽粒氮素的吸收积累量随着施氮量的增加而增加,间套作小麦籽粒氮素的吸收积累量大于相同施氮量单作小麦氮素的吸收积累量。在同一施氮水平下,间套作小麦花前氮同化量和总氮同化量都大于相应单作小麦,而间套作小麦花后氮同化量却小于相应单作小麦;单作和间套作小麦总氮同化量与其蛋白质含量之间呈显著正相关(r分别为0.936 ,0.987 )。
In this study, field experiments were set up on chestnut soil. The results showed that: the accumulation of nitrogen in different organs of flowering wheat increased with the increase of nitrogen application rate, the nitrogen content accumulated in leaves was the highest, followed by the spike> stem> leaf sheath, but when the nitrogen application reached 450kg / hm2, the accumulations of leaf sheath, stem and panicle nitrogen of single cropping wheat were decreased, and the nitrogen accumulation of organs with the same nitrogen application rate was greater than that of single cropping of wheat the amount. The accumulation of nitrogen in all nutritive bodies of wheat increased with the increase of nitrogen application rate at maturity. The accumulation of nitrogen in glume shell and cob was the largest, followed by stem> leaf sheath> leaf. At the ripening stage, The amount of nitrogen increase in the intercropping wheat is more than that of the same amount of nitrogen in the wheat nitrogen absorption and accumulation. Under the same nitrogen level, the nitrogen assimilation amount and total nitrogen assimilation amount of intercropping wheat before flowering were greater than that of single monocropping wheat, while the nitrogen assimilation amount of intercropping wheat was less than that of single monocropping wheat; There was a significant positive correlation between total nitrogen assimilation and its protein content in wheat (r = 0.936, 0.987, respectively).