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Total yields of vine tip of seven varieties of Leaf-vegetable sweetpotato during 2006-2007 were investigated; proportions of the weights of leaf, leaf stalk and stem in total vine tip yield and their changes among varieties and during topping stages were studied. The results showed that vine tip yields of sweetpotato were significantly different among either varieties or topping stages; leaf yield accounted for about 51% of total vine yield, and changes in leaf yield among topping stages were higher than that among varieties; while yields of leaf stalk and stem each accounted for 25% of total vine tip yield, their changes among varieties were higher than those among topping stages. These results revealed the yield composition of vine tip of Leaf-vegetable sweetpotato, which provided scientific references for breeding and cultivating new Leaf-vegetable sweetpotato variety and its industrialization.
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用泡沫保溫箱繁育甘薯薯苗,不用人工加熱,不占用專門場地,不用專人管理,應用自然陽光,箱內升溫快,出苗早且整齊,出苗量多,薯苗粗壯,適合種植面積較小的一家一戶育苗自用。本文詳細介紹了甘薯泡沫保溫箱簡易育苗的技術措施。
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