土壤养分供应与作物需求间的矛盾是影响有机种植作物产量的技术瓶颈之一。
Conflict between soil nutrient supply and crop demand is one of the technical bottlenecks influencing organic crop production.
探讨了森林地层在水土保持、养分供应、促进生物呼吸强度和土壤发育等方面的作用。
The function of forest floor on water conservation, nutrient supply, promoting biological respiratory intensity and soil development are discussed.
请简要说明营养液栽培与土壤栽培在植物养分供应上的不同点。
Please show the brief differentia between hydroponics and soil culture.
单施有机肥，土壤质量改善明显，但对作物养分供应不及时，造成产量较低；
Single organic fertilizer, improved soil quality, but the nutrient supply for crops not in time, and resulting in lower production;
并探讨了森林枯枝落叶层在森林土壤生态系统中对水源涵养、养分供应、促进生物活动强度和土壤发育等方面的功能。
Finally, the function of forest floor on wate conservation, nutrient supply, promoting biological respiratory intensity and soil development are discussed.
得出结果：26年生杉阔轮栽模式土壤有机质和全N含量增加．土壤生化活性加强．土壤速效养分供应量增强；
The results indicated that the soil organic matter and total N of 26-year-old PBCA stand increased. the activities of soil biochemistry strengthened. the amount of available nutrient supply enhanced.
分析数据表明，该区旱地土壤潜在肥力较低，有机质含量差异较大，大部分土壤氮、磷、钾养分供应不足。
The analytical data revealed that the potential fertility of the dryland soils was rather low, such as nitrogen, phosphorus and potassium content in soil were deficient on the whole.
分析数据表明，该区旱地土壤潜在肥力较低，有机质含量差异较大，大部分土壤氮、磷、钾养分供应不足。
The analytical data revealed that the potential fertility of the dryland soils was rather low, such as nitrogen, phosphorus and potassium content in soil were deficient on the whole.
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