论文部分内容阅读
一、对矮秆小麦品种的要求随着农业生产条件(尤其是水肥条件)的改善,世界上主要产麦国普遍提出对矮秆品种的要求。各国的小麦育种方案中,都把矮秆作为一个常规指标。本世纪60年代,国际玉米小麦改良中心(CIMMYT)培育的一系列矮秆半矮秆小麦品种的大面积推广,成为第一次“绿色革命”的重要组成部分,使得墨西哥、印度等由小麦进口国一跃成为小麦出口国,为缓和世界性的粮食紧张局势起到了很大作用。由于矮秆品种耐肥水,抗
First, the requirements of dwarf wheat varieties With the improvement of agricultural production conditions (especially the conditions of water and fertilizer), the world’s major wheat producing countries generally put forward the requirements for dwarf varieties. In all wheat breeding programs in various countries, dwarfing is used as a general indicator. In the 1960s, the large-scale popularization of a series of dwarf semi-dwarf wheat cultivars cultivated by International Maize and Wheat Improvement Center (CIMMYT) became an important part of the first “green revolution” and led to the import of wheat from Mexico, India, etc. The country has become a wheat exporter and has played a significant role in easing world food tensions. As dwarf varieties resistant to water, anti-