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目前,我国部分烟区(尤其是黄淮烟区)普遍采用烟行套种甘薯的不科学栽培模式,烤烟和甘薯争肥、争光,生长发育互为消长,烟叶长势旺则甘薯产量低;甘薯长得好则烤烟生长后期病虫害增加,甚至底
At present, part of the tobacco-growing areas in China (especially the Huang-Huai area) generally adopt the unscientific cultivation mode of tobacco-intercropped sweet potatoes. The fostering of tobacco and sweet potato, The late growth of tobacco and pests increase, even at the end