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土壤p素
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  soil phosphorous
     The result shows: seen from soil phosphorous description statistics,the content of R08_C06 nutrient is relatively high,unanimous basically in other four districts;
     结果表明:从土壤P素的描述性统计上看,R08_C06养分含量较高,其他4个区基本一致;
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  “土壤p素”译为未确定词的双语例句
     And,without P fertilizer application,P supply capacity of the soil decreased gradually throughout the 8 years of the experiment,from 95% in the first year to 45% in the last year,and so was soil.
     不施P肥,土壤P素自然供给能力第1年后为95%,8年后逐渐下降为45%左右;
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     Increasing P ap-plication is helpful to both N uptakes and P level improvement.
     增施P有利于N的吸收,并可提高土壤P素水平。
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     Olsen P appeared to be more sensitive than Mehlich 3 P as an indicator of P movement in a soil profile.
     3.污泥施用影响了土壤P素形态的分布格局。
短句来源
     Long-term high input of P to the soil has resulted in elevated levels of soil P and increased potential of P loss from the soil.
     土壤长期过量的P肥(包括化肥和有机肥)投入导致土壤P素水平的提高,从而加大了土壤P素流失的风险。
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     The pH of the soil in the tobacco-growing areas(pH 5.06) were lower,the N in soil was suitable,the content of P,Mg,B in the soil were deficient.
     kg-1和22.9 mg. kg-1.南平烟区土壤酸度较强,N素含量中等,土壤P素水平偏低,K素资源缺乏,Mg、B营养元素含量不足.
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  相似匹配句对
     K content of 56.7% of soil sample was insufficient;
     56.7% 土壤K营养不足;
短句来源
     ADVANCES IN SOIL POTASSIUM RESEARCH
     土壤研究进展
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     K is rich in the soil while N and P are deficient.
     土壤有机质,N和P严重不足,K丰富。
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     soil productivity;
     土壤生产力;
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     And thus function could not be ignored in the soil water and salt movement and redistribution in saline grassland.
     土壤含水.
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  soil phosphorous
The data are discussed in relation to the effects of root exudates on ferricrete formation and destruction and how the broader spatial pattern of such processes might relate to competition for soil phosphorous.
      
Site variables soil phosphorous (P) and soil potassium (K) were inconsistently correlated with the site characteristics canonical variable.
      
A Multiple discriminant analysis of these groups resulted in a function including depth of inundation, ratio of alkaline/alkaline earth major cations, and soil phosphorous content, which accounted for 83% of the variance between the four groups.
      
A detailed411 study of effects of soil phosphorous on colonization.
      
Chickpea is effective at extracting phosphorous due to the secretion of acids which dissolve soil phosphorous making it more available.
      


This paper discusses the varying laws of soil water and nutrients in thecase of different fertilizer conditions thereby to reveal the effects of water and fertilizerand its inter-reaction upon crop nutrient uptakes,moisture utilization and growth anddevelopment. The results show that under the rainfall conditions in the experimentalarea,yield increase by fertilizers is in the dominant place. Increasing N fertilizer can notonly improve crop N nutrient level but also promote P uptakes by crops. Increasing P ap-plication...

This paper discusses the varying laws of soil water and nutrients in thecase of different fertilizer conditions thereby to reveal the effects of water and fertilizerand its inter-reaction upon crop nutrient uptakes,moisture utilization and growth anddevelopment. The results show that under the rainfall conditions in the experimentalarea,yield increase by fertilizers is in the dominant place. Increasing N fertilizer can notonly improve crop N nutrient level but also promote P uptakes by crops. Increasing P ap-plication is helpful to both N uptakes and P level improvement. N and P fertilizer can in-crease water consumption by winter wheat in the previous and posterior growing stagesthereby to boost the tillerings and grain yield increase. Raising soil water potential canincrease crop N uptakes and strengthen crop water use efficiency. Therefore, wheattillerings and grain weight are closely related to soil water. In the case of water stress,the N translocation is grains in blocked,and N tends to accumulate in the leaves,stemsand root parts with N reduction in grains. As far as winter wheat growing in rainfed landis concerned,yield increase by water becomes apparent with the improvement in N level.The optimal N application is improved by the optimal water supplies.

探讨了旱地农田不同水肥条件下土壤水分和养分的变化规律,揭示了水和肥及其相互作用对作物养分吸收、水分利用以及生长发育的影响。结果表明,本试验区降水条件下,肥的增产作用占首位。增施N既提高了作物N营养水平,又促进了P的吸收;增施P有利于N的吸收,并可提高土壤P素水平。此外N肥和P肥可分别增强小麦生育前期和后期的耗水,从而促进分蘖和籽实增重。提高土壤水势既增加了作物对N的吸收,又加强了作物对水分的利用,小麦分蘖及籽粒重与水分关系密切。水分不足时,N向籽粒中的转移即会受限,N趋于在基叶和根部中累积,而籽粒中含N量相对减少。对于生长在旱季的小麦来说,水的增产作用是随着施N水平的提高而变得明显,N的适宜用量亦随供水量的增加而提高。

P fractions and their availability in soils of Chinese fir plantations in South China were studied. I P (inorganic P) was a major component of total P and it accounted for 72.48% in lateritic soil, 73.20% in red soil, and 63.77% in yeillow red soil. Al P, Fe P, O P, and Ca P accounted for 2.74%, 4.70%, 84.74% and 7.81% in lateritic soil, 2.46%, 11.90%, 77.24%, and 7.81% of inorganic P in red soil, 2.74%, 10.63%, 78.04% and 8.59% ...

P fractions and their availability in soils of Chinese fir plantations in South China were studied. I P (inorganic P) was a major component of total P and it accounted for 72.48% in lateritic soil, 73.20% in red soil, and 63.77% in yeillow red soil. Al P, Fe P, O P, and Ca P accounted for 2.74%, 4.70%, 84.74% and 7.81% in lateritic soil, 2.46%, 11.90%, 77.24%, and 7.81% of inorganic P in red soil, 2.74%, 10.63%, 78.04% and 8.59% in yellow red soil, respectively. Organic P in mountain yellow soil was a major composition of P, and I P only accounted for 30.56% of total P. Al P, Fe P, O P, and Ca P in inorganic P accounted for 1.54%, 15.67%, 78.85% and 3.94%, respectively. The distributions of Al P, O P, Fe P and Ca P in the four kinds of soils mentioned above had an obvious zonality and Al P appeared the characteric of transitional soil, while those of O P, Fe P and Ca P in the red soil region showed the complicated characteric and no homogeneity of P fractions. The regression analysis indicated that there was a significant relationship between Fe P and available P.

对几种主要杉木人工林土壤P素形态及其有效性进行研究,结果表明:(1)无机P是赤红壤、红壤、黄红壤P素的主要形态,其中O-P含量最高,Ca-P和Fe-P次之,Al-P含量最低。Al-P、Fe-P、O-P和Ca-P在赤红壤中分别占无机P的2.74%、4.70%、84.74%和7.81%;在红壤中分别占2.46%、11.90%、77.24%和7.80%;在黄红壤中分别占2.74%、10.63%、78.04%和8.59%。山地黄壤P素以有机P为主,无机P占全P的30.56%,Al-P、Fe-P、O-P和Ca-P分别占无机P的1.54%、15.67%、78.85%和3.94%。(2)在供试土壤区内Al-P、Fe-P、O-P和Ca-P表现出明显的地带性规律。但在红壤区内,Fe-P、O-P和Ca-P呈现出一定微域内P素形态的复杂性和不均一性的变化,Al-P表现出明显的过渡带土壤特征。(3)在不同P素形态中,Fe-P是杉木人工林土壤有效P的一个重要来源。

The effects and balance properties of long term nitrogen and phosphorous application in loessial hilly regions are explored in this paper based on field experiments and lab analysis from 1983 to 1992.The result indicates that there is a close correlation between the long term application and yields,and that all crops,planted in any type of soils,have stable yields with effective nitrogen and phosphorous application.The amount of N and P taken up by crops is in conformity with yield production,while the taken...

The effects and balance properties of long term nitrogen and phosphorous application in loessial hilly regions are explored in this paper based on field experiments and lab analysis from 1983 to 1992.The result indicates that there is a close correlation between the long term application and yields,and that all crops,planted in any type of soils,have stable yields with effective nitrogen and phosphorous application.The amount of N and P taken up by crops is in conformity with yield production,while the taken up N and P quantity decreases along with an extension of application time.The balance analysis shows that,with a compound application of N and P,there is a lack of nitrogen in soil and a surplus of phosphorous in valley field and that,with a combination of organic and inorganic use,a surplus of nitrogen is obvious.Besides the MNP treatment,there exists a lack of phosphorous on slanting land due to soil and water errosion.It is therefore concluded that there is a need of soil and water control on slanting land for the purpose of improving soil fertility.

以1983~1992年的田间试验结果和室内分析资料为依据,探讨了黄土丘陵区长期施用氮磷肥效应及平衡特征。结果表明:产量对长期施肥反应明显,不同作物在不同土地类型上,均以配施效果好而稳定。作物吸N,P量与产量规律一致,但随施肥时间延长,吸N,P量呈递减趋势。平衡结果表明:N,P配施土壤N素亏损,川地P素盈余,有机无机配合,N素均有盈余。坡地由于水土流失,除MNP处理外,土壤P素均处亏损状态。由此得出,坡地应控制水土流失,提高土壤肥力

 
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