本文从育林措施、气候、土壤、人工林群落结构、树种等方面概述了引起地力衰退的主要因素和应对策略。
This paper treats of the causes of site productivity decline of artificial forest, including planting methods, climate, soil, population structure, species and the proper measures.
玉米秸秆还田可以培肥地力，平衡土壤养分。
Corn straws as fertilizers may make the soil fertile and balance the nutrients.
农田土壤质量评价是耕地地力升降实行奖惩使用的前提。
Farm soil quality appraise is the prerequisite to realize the system of rewards and punisher - ents for using farm.
为了阻止耕地地力的持续下降和生态环境进一步恶化，土壤管理方式必须由传统的耕作方式转向保护性耕作。
To avert our arable land from further degradation, soil management must be shifted from degrading tillage to conservation practices.
表明杉木拟赤杨混交林具有良好的培肥土壤功能，对杉木人工林的地力维持和提高有重要意义。
It is concluded that the mixed stand can be able to be self-rich in soil fertility, which benefit the maintenance and improvement of site fertility under Chinese fir plantation.
特别是关于人工林是否导致地力退化，针叶林是否引起土壤酸化，一直是国际上争论的焦点。
If the plantation leaded to soil degradation and if conifers cause soil acidification had been the focuses debated in the world.
通过对雷州半岛桉树人工林大面积土壤调查，揭示了桉树人工林地力退化的现状和特征。
This paper reveals the current status and characteristics of land capacity degeneration of eucalyptus plantation in Leizhou Peninsula through investigation.
通过对雷州半岛桉树人工林大面积土壤调查研究和多点田间试验，揭示了桉树人工林地力退化的成因，提出了可行的防治措施。
By investigation and field trial, this paper reveals the causes of land capacity degeneration of eucalyptus plantations in Leizhou Peninsula, and put forward the control measures.
国内研究表明，目前耕地的地力不稳，土壤有机碳密度较低，农田土壤固碳的潜力较大。
All research results showed that the cultivated land fertility was unstable; density soil organic carbon was lower.
一般肥力水平的条田有实现超高产的可能 ，但若要持续高产、稳产 ，须培肥地力以增加或保持土壤较高的基础肥力。
Fields with average fertility can gain super high yield. To continual keep high yield and steady yield, foster fertility, increase or retain h…
在农业生产历史上，最初出现土壤侵蚀时，有时农民就迁往别处，让废弃的土地尽快恢复地力。
When erosion first appeared in the history of agriculture, the farmers sometimes moved on to another place , leaving the wasted land to recover as best it could;
在农业生产历史上，最初出现土壤侵蚀时，有时农民就迁往别处，让废弃的土地尽快恢复地力。
When erosion first appeared in the history of agriculture, the farmers sometimes moved on to another place , leaving the wasted land to recover as best it could;
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