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一、适时收获。甘薯块根没有严格的成熟期,一般以茎叶衰老、叶色转黄、落叶多时即可收获。如茎叶衰老缓慢,环境条件适于块根形成层活动,可推迟收获以提高产量。桂北,桂中应在霜前收获,避免块根受冻害出现“生理硬心”现象而降低品质及耐贮性。桂南可在12月中下旬收获。二、贮藏方法:分鲜贮法和干贮法。(一)鲜贮法:贮藏量小,贮藏时间短可采用此法。堆放时,必须选在通风干燥的室内,把烂薯、伤薯捡出,防止贮藏期间发生烂薯。桂中、桂北等有霜冻的地区一般采用地下挖窖
First, timely harvest. Sweet potato tuberous root does not have strict maturity, usually leaves and senescence, leaf color turn yellow, deciduous leaves can be harvested for a long time. Such as stems and leaves slow aging, environmental conditions suitable for tuberous formation activity, can delay the harvest to increase production. Guangxi, Guangxi should be harvested in the frost before frost damage to the roots to appear “physiological hard heart” phenomenon to reduce the quality and storability. Guinan harvest in late December. Second, storage methods: sub-fresh storage method and dry storage method. (A) fresh storage method: small amount of storage, storage time can be short. When stacked, it must be selected in a ventilated and dry room, the rotten potato, wounded potato picked out to prevent the occurrence of bad potato during storage. Guangxi, Guangxi and other frost areas generally use underground cellar