Helen: Today's new word is 'perk' – P. E. R. K. – perk.
快来告诉我们今天要学的新词是什么吧。
Thesequence of leaching loss from forest floor was K>organic C>total N>total P.
枯枝落叶层的养分淋失量以全K最大，其次为有机质、全N、全P。
In the whole growth stages, more than 50% of n, P and K were in leaves.
在整个生长期内，50%以上的氮、磷、钾集中在叶片。
The variation in CEC was similar to that in available P and K.
土壤阳离子交换量(cec)的变化与磷、钾的规律相似。
The variation in CEC was similar to that in available P and K.
土壤阳离子交换量(cec)的变化与磷、钾的规律相似。
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