养分平衡评价可以看出各试区养分收支情况为氮磷是有盈余的，而钾处于亏缺状态。
We can see from the valuation of nutrient balance that the nutrient of revenue and expenditure of each region was nitrogen and phosphorus were surplus, potassium was deficit.
研究了在养分循环再利用的基础上采取不同施肥制度下作物养分移出量，并结合施肥量计算出土壤中N、P、K养分收支。
The quantity of crop nutrients transferred from the system, and the nutrient budget of N, P and K in soil were studied.
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