先来谈谈选种的目的和一般选种的方法。选种的目的,为在一定产量的水准上,求品质的整齐。品质包括绒长、粗细等。我国目前,以绒长整齐为主要目标。不同品种,绒长亦不同,这是大家所熟知的,因此选种的标准,为选取同一外形的植株,包括叶、花,和植株类型等性状。所以从事选种的人,首先必须十分熟习该品种的各种性状,然后才能着手.例如在斯字棉二比品种里,必须选该一类型的植株,分收分轧,留作明年用种。冬閒时,再将不一类的杂子,剔除出去。这样,下一年种出来的棉花,比前一年,在外表上和品质上,更为整齐。 First to talk about the purpose of selection and general selection of methods. The purpose of seed selection, for a certain level of production standards, seeking quality and tidy. Quality, including cashmere length, thickness and so on. At present, our country is mainly composed of velvet. Different varieties, velvet length is also different, it is well known, so the selection criteria for selecting the same shape of plants, including leaves, flowers, and plant types and other traits. Therefore, those who are engaged in seed selection must first familiarize themselves with the various traits of the variety before they can proceed with them. For example, in the two varieties of Sword cotton, this type of plant must be selected for harvesting and rolling and reserved for planting next year . Winter leisure time, then not a class of sundry, removed out. In this way, the cotton planted next year will be more tidy than the previous year in appearance and quality.