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为了提高饲料甘薯总产量 ,开辟优质青绿饲料 ,开展了按不同时期、不同比例进行茎叶刈割的田间试验。结果表明 ,间隔 2 1d处理的甘薯茎叶产量前期较低 ,后期较高 ,能较好地协调地上地下部的关系 ;间隔 14～ 2 1d、刈割率 1/4处理的地上地下部总干物质产量较高 ,其中间隔 2 1d、刈割 1/4的总干物质和总粗蛋白质分别比传统一次性收获方式增产 13 0 3%和 16 31%。隔 2 8d全割的处理茎叶产量最高但薯块产量最低。因此生产上可按每隔 14～ 2 1d和 1/4的比例进行茎叶刈割 ,获取高产
In order to improve the total output of feed sweet potato, develop high-quality green feed, carried out in different periods, different proportions of field trials of cutting stems and leaves. The results showed that the yield and yield of sweetpotato stem and leaf at the interval of 21 days were lower at the early stage and higher at the later stage, which could well coordinate the relationship of above and below ground. The total dry shoots of aboveground and under ground at the interval of 14 ~ 21d, The material yield was higher, with the total dry matter and total crude protein of 1/4 of mulching increased by 13 0 3% and 16 31% respectively over the traditional one-time harvesting method at the interval of 21 days. The results of cutting every 28 days were highest in stems and leaves, but the yield of potato was the lowest. Therefore, the production can be every 14 ~ 2 1d and 1/4 ratio of stems and leaves cutting, access to high yield