一、矮秆品种的丰产性及其生理基础许多研究结果表明,过去小麦品种产量潜力的提高是和株高的降低紧密联系在一起的。例如:我国长江中下游地区,从地方品种到近期推广品种,株高由130厘米左右降至80—90厘米,经济系数由0.30提高到0.43,产量增长 First, the high yield of dwarf varieties and their physiological basis Many research results show that the yield potential of wheat varieties in the past to enhance and plant height is closely linked. For example, in the middle and lower reaches of the Yangtze River in our country, from varieties to local varieties to the recent promotion of varieties, plant height decreased from 130 centimeters to 80-90 centimeters, economic coefficient increased from 0.30 to 0.43 and output increased