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一、引言小麦的分蘖、叶片、幼穗是小麦的主要营养气官和生殖气官,分蘖、叶片和幼穗三者的发生及其间的关系,实际上也就反映了营养生长和生殖生长的关系。近来关于小麦群体规律方面的主要讨论中心,如主莖分蘖的关系;群体自动调节;叶面积指数的变化等等,都需要从分蘖、叶片、幼穗发生的内在规律上,进行研究。我国各地稻麦方面的劳模,在看苗掌握措施上,也主要是从稻麦的分蘖、叶片和幼穗质的或量的变化,做为依据。例如全国水稻劳模陈永康,依据叶片的“三黄三黑变化;安徽劳模桂景元,掌握小
I. INTRODUCTION The tiller, leaf and panicle of wheat are the main nutrients of wheat. The occurrence and interrelation among tillers, leaves and young ears actually reflect the growth of vegetative and reproductive relationship. Recent discussions on the laws of wheat population, such as the relationship between the tillering of main stems, the automatic regulation of population, the change of leaf area index, etc., need to be studied from the inherent laws of tillering, leaves and spikelet development. In our country, the model workers in the fields of rice and wheat depend mainly on the tillers, the changes in the amount of leaves and panicles, or the quantitative changes in rice and wheat grasping measures. For example, the national rice model worker Chen Yongkang, according to the leaves of the "three yellow and three black changes;