温水浸种是防除甘薯苗期黑斑病的有效方法,但由于春季气候冷凉,浸种缸缺乏保温设置,为了保持一定时间的恒温,就要不断的加添热水调剂。这样,不仅多费烧柴、劳力和时间,而且农民也不易掌握。1956年的春天,我们根据上述情况和省植保会议研究的意见,在基点进行了地下锅缸连 Soaking warm water is an effective way to control sweet spot of sweet potato at seedling stage. However, due to the cold climate in spring and the lack of heat preservation in seed soaking tank, in order to maintain constant temperature for a certain period of time, it is necessary to continuously add hot water to adjust. In this way, not only burning more wood, labor and time, and peasants are not easy to grasp. In the spring of 1956, on the basis of the above information and the opinions of the provincial plant protection conference, we conducted underground pots and bulges