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红薯黑疤病是红薯的主要病害,常造成烂窖、烂床和大量死苗,使生产受到严重损失。以往推行的温汤浸种、代森铵、“401”及有机汞等药剂防治方法,由于操作繁杂,或剧毒不安全,加之防效不理想等,未能在生产中有效的解决这一问题。 1973年以来,我们和省植物保护研究所共同协作,使用甲基托布津、麦穗宁和棉萎灵等三种新农药,在我区山阳、商县、丹凤、商南等地十一个点上进行了处理薯苗和入窖种薯防治试验。在多点试验成功的基础上,1974年在山阳、商县、丹凤等三县开展了育苗
Sweet potato black scar disease is the main disease of sweet potato, often resulting in rotten pit, rotten bed and a large number of dead seedlings, so that production suffered serious losses. In the past, we have not been able to effectively solve this problem by soaking seeds with warm soup, substituting ammonium sulfate, “401” and organic mercury, etc., because of complicated operations or insecure toxicities, as well as unsatisfactory control effects. Since 1973, we cooperated with the Provincial Institute of Plant Protection to use three new pesticides, thiophanate-methyl, wheat-spike and cotton-spike. In our district, there are 10 new pesticides in Sanyang, Shangxian, Danfeng and Shangnan A point on the processing of seedlings and cellars seed potato prevention and control tests. On the basis of the success of the multi-point test, seedlings were raised in three counties of Sanyo, Shangxian and Danfeng in 1974