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甘蔗生育期长,繁殖系数低,加上榨季在冬时,种苗收获后,常因保管不好,受干风吹打,太阳暴晒,低温干燥等影响,失水阴枯;或因病菌侵染腐烂,鼠咬和虫蚁蛀食,而丧失发芽能力。为了消除这些不利因素的危害,加快良种繁育速度,应推广快速催芽育苗技术。一、提高种苗利用率 1.种苗分级种植:一块甘蔗地中,有三种蔗株,即成熟蔗、秋笋蔗和入冬苗。有些变异类型偏向早熟,提早抽苔开花。为了给大田提供纯、良、精壮、发芽一致、生长整齐、发育均衡的优良种苗后代,在采种繁殖时,必须对种蔗、种苗进行选择分级。先汰除开化、有虫、有病蔗株,
Sugar cane growth period, the low coefficient of multiplication, coupled with the crop in winter, the seedling harvest, often due to poor storage, dry wind blow, sun exposure, low temperature drying and other effects, Dyed rot, rat bites and insects eaten, and lost the ability to germinate. In order to eliminate the harm of these unfavorable factors and speed up the breeding of fine varieties, we should promote the rapid germination and seedling raising technology. First, to improve the utilization of seedlings 1. Seedling grading cultivation: a piece of sugarcane in the field, there are three kinds of sugarcane plants, namely, mature sugarcane, autumn and winter cane shoots and winter seedlings. Some types of variation tend to precocious, early bolting flowering. In order to provide the field with pure, good, strong, germinate, tidy, balanced development of good seedlings offspring, seed breeding, you must select the classification of seed cane, seedlings. In addition to the first elimination of Kaihua, there are worms, sick cane strains,