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土壤速效p
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  soil rapidly available p
     The results showed that red soil microbial biomass P was closely related with soil total P, soil organic P and soil rapidly available P. Relative coefficients were 0.840, 0.897 and 0.944, respectively.
     结果表明,红壤微生物量P与土壤全P、土壤有机P以及土壤速效P之间存在明显正相关,相关系数分别为0.840, 0.897和0.944。
短句来源
     Especially, the significant relation of red soil microbial biomass P to soil rapidly available P suggested that red soil microbial biomass P may act as an indicator of P-supply ability.
     红壤微生物量P尤以与土壤速效P关系最为密切,红壤微生物量P有可能作为红壤供P能力的一个活指标;
短句来源
  soil available p
     Results showed that the content of available P increased in loamy soil by application of N and P under the content of soil water (11%~14%), and content of soil available P decreased with the depth of soil increase.
     结果表明 ,在中壤质土壤含水量 11%~ 14%的情况下 ,不同N、P配比明显增加了土壤剖面中速效P的含量 ,但随着土壤深度的增加 ,土壤速效P呈不断下降的趋势。
短句来源
     Desorbed P was significantly correlated with soil available P and P uptake by Plant.
     解吸P量与土壤速效P和植物吸收P均有显著相关 .
短句来源
     Rhizosphere soil available P contents are lower than bulk soil P, but rhizosphere soil available P contents are higher with rising temperature,
     根际土壤速效 P含量比土体速效磷低 ,2 8℃温度时根际土壤速效磷量较高。
短句来源
     PCA analysis indicated that soil available P was the most important factor affecting composition of weed communities, and followed by soil available N.
     主成分分析表明:土壤速效 P 是影响田间杂草种群组成最为重要的因子,而速效 N 则为第二重要因子。
短句来源
     The content of soil available P and rapidly available K in subsoil in these two reforested patterns are lower than in farmland.
     两种退耕还林模式表层土壤速效P和速效K含量均低于农耕地。
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  soil readily available p
     There is very significant and positive correlation between the contents of soil readily available P in the layer B and ecological dominance of the community.
     B层土壤速效P的含量与群落生态优势度呈显著正相关;
短句来源
     There is very significant and positive correlation between the contents of soil readily available K in the layer A,B and vegetation coverage, and the relationship between the contents of soil readily available P in the layer B and vegetation coverage is on the contrary.
     A、B层土壤速效K含量与植被群落盖度呈正相关关系,B层土壤速效P含量与其关系相反。
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  “土壤速效p”译为未确定词的双语例句
     Soil available phosphorus and potassium were 691.9 mg·kg~(-1)and 623.5 mg·kg~(-1),respectively,which were at a high level of soil fertility.
     土壤速效P、速效K累积量很高,分别达691.9和623.5 mg. kg-1,100%处于高水平;
短句来源
     The CaCl_2 extractable P was very little from soils below 60mg·kg~(-1) Bray-P (termed the Change-Point), however, CaCl_2 extractable P was linearly related to the soil Bray-P. When above the Change-Point we therefore suggested that the Change-Point of around 60 mg·kg~(-1) Bray-P was a critical concentration at which leaching of P happened in vegetable soil.
     土壤Bray P低于60mg·kg-1,几乎没有检测到CaCl2浸提水溶P,而当土壤速效P大于60mg·kg-1后,CaCl2浸提水溶P随Bray P增加而直线增加.
短句来源
     The enriching point of available P depended on soil types, being P2O5 60 ~ 120 mg/kg in the paddy soil derived from Tertiary red sandstone, and P2O5 120 ~ 180 mg/kg in the paddy soils from Quaternary red clay and loess-like lake sediment.
     土壤速效P出现富集的转折点因供试土壤而异,第三纪红壤性水稻土大致为P2O560~120mg/kg,而第四纪红壤性水稻土和黄泥土为P2O5120~180mg/kg。
短句来源
     The coefficient of correlation was 0 65, and -0 63 between available P and Zn , and available P and Fe, respectively.
     土壤速效P、Zn、Cu、Mn、Fe之间的相关分析表明 ,土壤速效P与有效Zn之间存在显著的正相关关系 (r =0 .6 5 ) ,而与有效Fe之间则存在显著的负相关关系 (r =- 0 .6 3)。
短句来源
     Results showed that application of P fertilizer could improve the contents of total P and inorganic P significantly, while decreased the content of organic P. The correlations between the contents of available P and various fractions of inorganic P were best for Al-P, Fe-P and O-P second, and Ca-P worst.
     结果表明:使用P肥能明显提高土壤全P、无机P和土壤速效P含量; 土壤速效P与无机P各组分的相关性以Al-P最好,Fe-P、O-P次之,Ca-P最差。
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  soil available p
Surface soil available P under tree canopies was 34-50% higher than the corresponding soil away from canopies.
      
Phosphorus-based manure or compost application resulted in similar grain yields to those for N-based treatments but had significantly less soil available P level after 4 yr of application.
      
Although differences were not statistically significant, soil available P concentration tended to increase at early stages of liming for both plantations.
      
However, at the same levels of soil available P and K, field-grown tithonia consistently produced lower leaf P and K concentrations than that grown in hedges.
      
We quantified inputs from the atmosphere, dissolved and particulate-bound losses, throughfall and litterfall fluxes, standing crop litter and soil available P pools.
      
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The regression analysis results of rate of fertilizer, amount uptaken by crops and accumulation of soil nutrients in the localized trial of fertilizers on wheatcorn on yellow fluvo-aquic soils during 1981—1986 showed that 8.76% of chemical fertilizer-N and 42.54% of organic fertilizer-N entered into soil N pool, 17.61% of chemical fertilizer-P and 17.20% of organic fertilizer-P into soil available P pool, and 4.5% of chemical fertilizer-K and 2.3% of organic fertilizer-K into soil available K pool. Chemical...

The regression analysis results of rate of fertilizer, amount uptaken by crops and accumulation of soil nutrients in the localized trial of fertilizers on wheatcorn on yellow fluvo-aquic soils during 1981—1986 showed that 8.76% of chemical fertilizer-N and 42.54% of organic fertilizer-N entered into soil N pool, 17.61% of chemical fertilizer-P and 17.20% of organic fertilizer-P into soil available P pool, and 4.5% of chemical fertilizer-K and 2.3% of organic fertilizer-K into soil available K pool. Chemical fertilizers tended to increase in organic matter content of the soils, while significantly good effect of organic fertilizers was found on supplementing soil nutrients such as P and K and improving soil physical properties. Combined application of chemical and organic fertilizers was effective both in promoting soil fertility and raising crop yield.

1981—1986年在黄潮土上的小麦—玉米肥料定位试验,对肥料用量、作物吸收量和土壤养分积累量的回归分析结果:化肥N和有机肥N有8.76%和42.54%进入土壤N库;化肥P和有机肥P有17.61%和17.20%进入土壤速效P库;化肥K和有机肥K有4.5%和2.3%进入土壤速效K库。化肥对土壤有机质含量略有增加趋势,有机肥对补给土壤P、K养分,改善土壤物理性状有明显效果。有机无机配合施用具有培肥、增产两方面的作用。

Soil condition affects the epidemic of Dothiorella gregaria Sacc. severely in that a positive correlation was found between the available phosphorus in 41~60cm depth of soil and disease index of the canker , while a negative correlation was found between pH of the soil layer and the disease index. Phosphorus content of the poplar bark was correlated positively with both the disease index and the available P in the soil layer. The available P and pH of the soil layer showed positive effect on the canker whereas...

Soil condition affects the epidemic of Dothiorella gregaria Sacc. severely in that a positive correlation was found between the available phosphorus in 41~60cm depth of soil and disease index of the canker , while a negative correlation was found between pH of the soil layer and the disease index. Phosphorus content of the poplar bark was correlated positively with both the disease index and the available P in the soil layer. The available P and pH of the soil layer showed positive effect on the canker whereas the total nitrogen and the available potassium of the soil layer showed negative effect as revealed by path analysis. The order of effect is: P>K>N>pH .

土壤条件对箭杆杨溃疡病的流行与抗病性及发病程度具有明显影响。40~60cm深层土壤中的速效P与病情指数是显著正相关,pH与病情指数呈负相关。树皮中全P含量与该层土壤速效P含量及感病指数均具有显著的正相关性。通径分析指出,该层土壤的速效P及其pH对病情指数产生正效应;而全N、速效K对病情指数产生负效应。它们的效应大小依次为:P>K>N>pH。

years field experiment on N and P balances in farmland ecosystem shows that the application of N and P fertilizers with stalk returned to soil can increase the contents of soil organic matter and total nitrogen, and its available and non-available P pools are supplemented. In last years, the utilization efficiency of P fertilizer is 22. 1 - 65. 1 %, and that ofN fertilizer is 49 - 75%. The application of storable P only has an efficiency of 6. 5 7. 3 % in the first year, and its total efficiency in-first three...

years field experiment on N and P balances in farmland ecosystem shows that the application of N and P fertilizers with stalk returned to soil can increase the contents of soil organic matter and total nitrogen, and its available and non-available P pools are supplemented. In last years, the utilization efficiency of P fertilizer is 22. 1 - 65. 1 %, and that ofN fertilizer is 49 - 75%. The application of storable P only has an efficiency of 6. 5 7. 3 % in the first year, and its total efficiency in-first three years is 24- 28. 5 %. The average utilization efficiency of applied P In nine years is 27. 9- 48. 8% , and that of supplemented P is 19. 5 - 42. 9%. The application of 65. 5kg P. ha-l. yr-1 can both satisfy the Prequirement of crops and supply the available P pool in soil.

9年的农田生态系统N、P营养平衡定位试验研究表明,N、P肥配合施用,实行秸秆还田,可提高土壤有机质和全N含量,使土壤速效和迟效P库容量得到补充.最后几年的P肥利用率达21.1—65.1%,N肥为49—75%.储备性施P第1年的利用率只有6.5-7.3%,而前3年之和达到24—28.5%,9年3个时段平均利用率27.9—42.8%,补偿性施P的19.5—42.9%.施P65.5kg·ha-1·yr-1时,既能满足作物对P的需求又能补充土壤速效P库容量.

 
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