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湖南稷子(Echinochloa/FumetaceaLink)为稗属一年生禾本科牧草。在宁夏经科技工作者多年培育,表现出株型紧凑高大,叶片多,产量高,至1987年己推广种植1.5万余亩,很受群众欢迎。湖南稷子的理想株型和高产性能主要是由叶片的特征所决定的。因为叶片是叶的主要组成部分,是植物进行光合作用的主要器官,对于牧草来说,叶片既是“源”,也是“库”,它养分含量高,适口性好。所以叶片的大小、生长规律、空间分布及相对量的多少不仅是合理促控提高产量的重要依据,也是评价牧草优劣的主要指标。为了探讨湖南稷子牧草高产的内在原因,我们在试验推广的同时,对其叶片特征进行了观测,并对与叶片特征有关的高产因素进行了分析。
Echinochloa / Fumetacea Link is an annual gramineous grass of Echinochloa. In Ningxia, after many years of cultivation by science and technology workers, it shows that the plant type is compact and tall with many leaves and high yield. By 1987, 1.5 million mu of plantation had been popularized and it was very popular with the masses. The ideal plant type and high yield performance of Hunan Yi is mainly determined by the characteristics of the leaves. Because the leaf is the main component of the leaves, is the main organ of plants photosynthesis, for the forage, the leaves are both “source” is also a “library”, it is high in nutrient content, palatability good. Therefore, the leaf size, growth pattern, spatial distribution and the relative amount of not only an important basis for reasonable promotion and control of yield, but also evaluate the main indicators of forage quality. In order to explore the inherent causes of high yielding herbage in Hunan, we observed the characteristics of the leaves at the same time as the experimental popularization, and analyzed the factors of high yield related to leaf characteristics.