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句容市地处丘陵,脱毒甘薯种植面积较大,在大面积生产中,由于薯块整齐度差,虫孔(槽)、龟裂和破损严重,收贮期间又因湿害、冷害等导致软腐病、黑斑病的影响,商品薯率一般只达到50%-55%。如何提高商品薯品质,达到优质、高产、增收的目的,通过近年来的研究与实践,笔者认为必须把握好以下8个技术要点:1防止蚜虫危害脱毒甘薯遭受蚜虫或粉虱危害后极易重新感染病毒病而影响产量和品质。要在及时防除田边地头杂草并实现相对连片集中种植的同时,在甘薯生长期内,重视及时防治蚜虫和其它害虫,一般宜选用高效、长效、低毒的10%吡虫啉或20%氰戊菊酯3000-
Jurong City is located in the hills, detoxification sweet potato planting area larger in large-scale production, due to poor uniformity of tubers, wormhole (trough), cracking and damage serious, storage and storage due to wet damage, chilling damage, etc. Lead to the impact of soft rot, black spot disease, commodity potato generally only reach 50% -55%. How to improve the quality of potato products, to achieve high-quality, high yield, the purpose of increasing income, through research and practice in recent years, I believe that we must grasp the following eight key technical points: 1 to prevent aphids harm virus-free sweetpotato suffer from aphids or whitefly after the extremely vulnerable Re-infected with the virus affect the yield and quality. In the timely control of weeds in the Tanabe and the relative contiguous concentrated planting at the same time, in the sweet potato growth period, attention to timely control of aphids and other pests, the general should choose efficient, long-acting, low toxicity 10% imidacloprid or 20% Fenvalerate 3000-