但钾肥浓度过高，会使番茄产量、品质降低。
But in excessive K application treatment, the yield and quality decreased.
食品中的微生物是导致食品品质降低的重要原因之一。
Microorganisms in food is one of the most important factors which causes food to decay .
实验结果表明，发芽小麦储藏品质降低，因此在储藏中应加强管理。
The experiment results showed that the storage quality of sprout wheat was lower.
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