糖汁纯度高，块根品质好。

Sugar juice purity is high, the root quality is good.

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根据前人的资料和研究，对钾如何影响谷类作物，块根、块茎作物、蔬菜及烤烟品质的问题作了简要评述。

According to previous research and data, this paper review some aspects how quality of some crops such as cereal crop, root and tuber crop, vegetable and flue-cured tobacco is affected by potassium.

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甘薯块根中的主要贮藏物质为淀粉，如何提高甘薯淀粉含量与质量是当前国内外甘薯品质育种的三大主攻方向之一。

The mainly substance in tuberous root in sweet potato is starch. How to improve the content of starch in tuberous root is one of important tasks in sweet potato breeding.

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甘薯块根中的主要贮藏物质为淀粉，如何提高甘薯淀粉含量与质量是当前国内外甘薯品质育种的三大主攻方向之一。

The mainly substance in tuberous root in sweet potato is starch. How to improve the content of starch in tuberous root is one of important tasks in sweet potato breeding.

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