【摘要】 根据广东省大陆小麦生育期间20年的气候资料和29个品种2年生态学试验数据,用计算机以聚类法定量分区,将隶属华南早熟麦区的广东省划归为6个小麦生态亚区。指出各区主要农艺和产量性状控制指标,为小麦生产发展、品种布局及栽培技术改良提供理论依据。井探讨了小麦生态区划的若干原则、聚类法的应用要求和指标选择依据。更多还原

【Abstract】 The continent of Guangdong Province was divided into six wheat sub-ecological regions according to the results of agglomerative classification analysis and computerizing with the wheat growing seasons climate data in 1961-1981, which were collected from 43 meteorological observatories and stations in Guangdong Province.Sub-region Ⅰ Beijing upper reaches, basin, valley and hilly land area.Sub-region Ⅱ Beijing middle reaches, plain and basin area.Sub-region Ⅲ "Xing-Mei" (Xingning and Meixian counties) basin area.Sub-region Ⅳ Coushan plain and Huizhou basin area.Sub-region Ⅴ Pearl delta and western mountains basin area.Sub-region Ⅵ Leizhou peninsula area.Genetic and cultural control criteria such as the growing season, plant height, Spikelet number per head, grain number per head, and 1000-grain weight were also presented.The main ecological factors used in this study were average temperature in December, minimum temperature in January, precipitation in March, and sunshine hours from March 21-31. Criteria of growing days, plant height, spikelet number per head, 1000 grain weight not only had relative stability of inheritance but were more sensitive to natural ecological factors, the formers were used as main factors and the latters as subsidaries in grouping. They combined with the practice of wheat production so as to determine the boundary lines of the regions.更多还原