Therefore, straw mulching is an efficient measure to maintain and improve the regime of soil nitrogen nutrition.
因此，秸秆施用是保持和提高土壤氮素营养的有效措施。
The objective of this study was to evaluate the effects of nitrogen nutrition on water status and photosynthesis in wheat under soil drought.
轻度土壤干旱下，小麦叶片仍能维持较好的水分状况，高氮营养对叶片光合作用有明显的促进作用。
The results showed that lime soil supplied the plants with more nitrogen nutrition, less phosphorus and potassium nutrition.
结果表明，石灰岩类土壤提供给烟株吸收利用的氮养分较多，而磷钾养分较少。
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