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- soil fertility grade 地力等级
- It's an effective way to maintain soil fertility. 这是保持土壤肥力的一个有效办法。
- How do earthworms influence soil fertility? 蚯蚓如何影响土壤肥力?
- The soil fertility shows a decrease trend in cornpea rotation. 玉米、豆轮作，土壤养分均呈下降趋势。
- Influence of thinning on soil fertility in artificial forests. 抚育间伐对人工林土壤肥力的影响。
- The Impact of Soil Fertility on the Yield of Phyllanthus Emblica L. 土壤肥力对余甘子产量的影响。
- A green manure is a crop grown mainly to improve soil fertility. 种植绿肥作物主要是为使土壤更加肥沃。
- soil fertility grading 土壤肥力分级
- Strip check space varies with plot slope, soil fertility and irrigation. 条畦宽度随地块坡度、土壤肥力和灌溉而变化。
- The paddy?upland system increased clay dispersion content and soil fertility. 水旱轮作可增加土壤黏粒含量,提高高沙土肥力水平;
- The status of soil aggregates is an important factor affecting soil fertility. 土壤团聚体和水稳性团聚体的状况是影响土壤肥力的一个重要因素。
- Application of Integrated Fertility Index Method in Evaluating Changes in Soil Fertility. 应用指数和法对潮土农田土壤肥力变化的评价研究。
- Artifical improvement of soil fertility in a regraded forest ecosystem by using municipal sewage sludge. 城市污泥对退化森林生态系统土壤的人工熟化研究。
- Effect of long-term fallow and cultivation on soil fertility in rice-based cropping system. 水旱轮作地区土壤长期休闲与耕种的肥力效应。
- Robinia pseudoacacia was better than Pinus tabulae formis in enhancing the soil fertility. 在树龄相同的条件下刺槐林对土壤培肥效应优于油松林。
- According to the areca production situation and soil fertility,the investigation was carried on in Hainan. 为了海南槟榔产业稳步健康的发展,针对槟榔生产现状和槟榔园土壤肥力状况进行了调查和分析。
- Illite belongs to clay minerals, it has absorbent ability and higher potassium, which can improve the soil fertility. 伊利石属层状粘土矿物，具有吸水性，含钾较高，可以提高土壤肥效。
- And the soil fertility and species diversity of stands treated by EGC were also greater than the control. 采取生态型林地清理方式的林分土壤肥力及物种多样性均比对照林分高。
- Which returns ingredients to the soil, enhances soil fertility, and decomposes animal debris. 而腐化过程将化学物质回馈于土壤,提高其肥力,并分解动物粪便。
- Blackland element with fertility taller and celebrated, but come for years its soil fertility drops apparently. 黑土素以肥力较高而著称，但多年来其地力明显下降。
