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红薯切块后在35℃以上的温度下进行高温催芽,经过八天后,薯块萌芽率可达90%左右,萌芽长度可达4公分左右。用已萌芽的薯块在冷畦中育苗在排种较稀,和加强水肥管理的情况下既能出苗快、出苗多、又能出苗茁壮。采用这种方法育苗对防止苗期黑斑病有显著的效果,但由于地下虫的危害,可增加畦内种薯上黑斑病的发生和传播,为了提高防病效果,在畦内育苗时,还必须注意对地下害虫的防治。从初步试验结果来看这种育苗方法不仅可用于培育夏薯秧苗,若能配合上塑料薄膜的使用也有用于培育春薯秧苗的可能,因而对改进红薯育苗方法提高薯苗产量,节约育苗成本以及对黑斑病的防治方面都提供了进一步解决的途径。
After the cutting of sweet potato at 35 ℃ above temperature for germination, after eight days, the potato germination rate of up to 90%, germination length of up to 4 cm. With the bud has been sprouted in the cold nursery nursery in the seeding more dilute, and to strengthen the management of water and fertilizer in the case of both emergence fast, emergence and more, but also emerge robust. Breeding in this way has a significant effect on the prevention of black spot in seedling stage. However, due to the damage of underground insects, the occurrence and spread of black spot on the seed can be increased. In order to improve the disease prevention effect, , But also must pay attention to the prevention and treatment of underground pests. From the preliminary test results, this seedling raising method can not only be used to cultivate sweet potato seedling, if the plastic film can be used in combination with the potential for cultivating sweet potato seedling, so improving the sweet potato seedling raising methods to reduce the seedling cost As well as the prevention and treatment of black spot disease both provide a way to further solve.