natural fertility

Economic fertility of soil is a combined formati on of artificial and natural fertility.

土地肥力是土地的客觀屬性 ;土地肥力包括了許多要素 ;具有肥力的土地是農業基本生產資料 ;土地自然肥力是自然歷史過程的產物 ;土地經濟肥力是人工肥力和自然肥力的統一體 ;科學技術在土地肥力發展中起著十分重要的作用 ;自然土壤向農業土壤的轉化和發展 ,是人類生活和生產發展的必然產

The research made a use of the earthworm with a competition of natural fertilizer to study the influence of the two treatments to the ammonia yield in livestock excrement.

該試驗利用蚯蚓生物處理方法,同自然堆肥作對比試驗,研究了兩種處理對畜禽糞便氨氣產量的影響。

Higher yields obtained take up more nutrients which have to be replaced to sustain high yields even in soils with high natural fertility.

較高的產量需要更多的養分來補充，即使在自然肥力高的土壤上也是一樣。

Study on the Relationship between Soil Microbes and Soil Fertility in Paddy Fields of Long-term No-tillage and Ridge Culture;

自然免耕稻田的土壤微生物與肥力關系研究

Assessment on Effects of Forest Succession on Soil Fertility in Xinglongshan Mountain National Nature Reserve,Gansu Province

甘肅興隆山自然保護區森林演替對土壤肥力影響的評價

vis medicatrix naturae [ medi5keitriks nei5tju:ri: ]

【醫】自然治愈力, 自愈力

The islands being wholly of volcanic origin, the soil is necessarily very rich.

島上全是火山地帶，土質自然非常肥沃。

physical force or magnetic attraction found in nature

（自然界的）力,磁力,引力

Weight reduction intervention and self-care ability of children with simple obesity

單純性肥胖兒童的減肥干預和自我護理能力

self-restoring capacity of nature

自然的自我恢復能力

Genotypic difference in Inbred Iines of Maize on Fertilizer Effect

玉米自交系對肥力反應的基因型差異

Jiangjin is in the subtropical monsoon climate zone, with fertile land and ahundant natural resources.

江津屬亞熱帶季風氣候，土地肥沃，自然資源豐富。

Under natural conditions, the incubation period in feedlot cattle is uncertain in length.

在自然條件下，肥育舍飼牛的潛伏期，還沒有確定。

Ecological Observation on Pachytriton Labiatus in Nanling Nature Reserve of North Guangdong;

廣東南嶺國家自然保護區無斑肥螈的生態觀察

Research on the Dynamic Change of the Microbial Community in the Process of Naturally Composting

自然堆肥過程中微生物群落的動態變化

Change of Soil Fertility in Pinus sylvestris var. mongolica Natural Forest in Sandy Land

沙地樟子松天然林土壤肥力變化的研究

For this reason, China will continue to make great efforts to expand its chemical fertilizer production and raise the self-sufficiency rate of chemical fertilizer. By 2000 China will be basically self-sufficient in nitrogenous fertilizer.

今后，中國將大力發展國內化肥生產，提高化肥自給率，到2000年做到氮肥基本自給。

suggesting the operation of supernatural influences.

表明超自然力影響的。

physical capacity of the natural environment

自然環境物質負荷能力

He was making a visible effort to control himself.

他顯然在努力控制自己。