掌握土壤养分肥力状况，是制定施肥策略的基础。
Knowing the soil nutrient fertility is the basis to formulate a suitable fertilization strategy.
采用好气培养法研究了新型硝化抑制剂3，4-二甲基吡唑磷酸盐（DMPP）对菜园土壤养分肥力的影响。
This paper probes into the NH 4 + N, NO 3 - N concentration dynamics on DMPP (3,4 dimethylpyrazole phosphate) in vegetable soils under fertilized condition with aerobic cultivation.
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