The studies on desorption model afforded a new method to estimate biological validity of soil p.
解吸模型研究为评价土壤磷素有效性提供了一种新方法。
Soil P was mainly distributed in the fine fractions on the acidic soils, however on the calcareous soils in the coarser fractions.
在酸性土壤中P主要分布在较细的粒级中，而在石灰性土壤中则主要分布在较粗粒级中。
Soil microbial biomass P is a valuable resource to plant P nutrient, and also play an important role in the transformaion of soil phosphorus.
土壤微生物生物量磷是植物磷素营养极其重要的来源，对土壤磷素的供给和调节起着重要作用。
These results indicated that soil P saturation degree could efficiently characterize soil P release potential and its impaction on the environments.
土壤磷饱和度可很好地表征土壤磷释放和对环境的潜在影响。
The tobacco biomass increased with the increase of P concentration in the soil.
随着向土壤中添加磷浓度的增加，烟草生物量呈增加趋势。
Reducing N and P rates also decreased N and P accumulation and nitrate content in the soil and decreased the risk of N and P running off.
减少氮磷化肥用量可以大幅度降低氮磷在土壤中的累积和硝酸盐的含量，减少氮磷的流失风险。
To investigate the changes of soil hydrolase activities under application of corn straws with manure, N and P fertilizer, a field experiment was conducted.
通过田间试验，进行了玉米秸秆与厩肥、N肥和P肥配合施入农田后土壤中水解类酶活性变化的研究。
In order to study the relationship between yield, maize ear treats and organ matter, N-OH, available P and K, we selected field block with different soil nutrition in Mei county, Shaanxi province.
在陕西眉县选择农田土壤养分含量不同的地块，研究不同含量的有机质，碱解氮、速效磷、速效钾与玉米果穗穗部性状及产量的关系。
Studies were made of variation of pH, P, K, organic matter, and moisture in soil samples from different sites of north Shanxi.
对取自山西省北部不同地点、不同层次的土样的p H值、磷、钾、有机质、水含量的变化进行了研究。
It shows that the yield improvement is mainly due to the soil nutrient amelioration (especially nitrogen nutrient) and the interaction of mutual supplement of N and P nutrient.
指出杨树刺槐混交林生产力提高主要是因为林地土壤养分（特别是N素养分）的极大改善及树种间N、P养分的互补。
In addition, the accumulative quantity n, P and K in the soil soluble liquid decreased further when the concentration of PAM increased.
同时，不同浓度pam的试验结果发现，增加PAM浓度能使土壤淋溶液中n,p,K累积量进一步减少。
Accordingly, the tested 23 soils, except the paddy rice soil No. 20 from Qianjiang Hubei Province, had low risk of P leaching occurrence.
供试的23个土壤，除了采自湖北潜江的20号水稻土存在比较大的磷素淋失风险，其余土壤发生磷素淋失的风险很小。
The characteristics of nitrogen(N) and phosphorus(P) loss under 5 land use patterns were studied in Sunjia small red soil watershed during the Course of rain.
研究了次降雨过程中红壤小流域5种不同土地利用方式土壤N，P养分流失特征。
The relationship between incidence of fusarium wilt in chilly and the amount and preparation of N. P. K fertilizer was studied on the bases of soil chemical analysis.
在土壤化学分析的基础上研究分析用不同n、P、K配方施肥与辣椒枯萎病发生的关系。
The PS-primer-based PCR assay provides a rapid and sensitive tool for the detection of P. sojae in soil and infected soybean tissue.
本套PCR检测技术为土壤及发病植株中大豆疫霉的检测提供了快速、灵敏的方法。
The sustainability index indicated that, the sustainability of soil N was much more dependent on chemical fertilizer input, while P and K were relied on organic fertilizer.
之间；通过可持续性指数的分析得出，土壤N素养分的可持续性对化肥的依赖性较大，而P、K养分的可持续性则对有机肥的依赖性更高。
Method: the physicochemical properties of soil were analyzed, the geologic background system between producing areas of Yunnan and Guanxi of P. notoginseng was compared.
方法比较云南、广西三七产区的不同地质背景系统，分析土壤理化状况。
The quantity of crop nutrients transferred from the system, and the nutrient budget of N, P and K in soil were studied.
研究了在养分循环再利用的基础上采取不同施肥制度下作物养分移出量，并结合施肥量计算出土壤中N、P、K养分收支。
The main soil nutrients of affecting wheat yield is P>K>B by the systematic approach for determining nutrient contents of the yellow soil in Tongren prefecture.
通过土壤养分系统研究法，诊断出贵州省铜仁地区松桃县黄泥土影响小麦产量的主要限制因子排列为：P>K>B。
The increase in available P due to P fertilizer application and the yearly decrease in available P after pot culture varied greatly with soil types.
施磷肥处理所增加的有效磷比例和盆栽后土壤有效磷量逐年下降幅度因土壤类型不同而差异很大。
In control condition of the growth chamber analyzing the influence of inoculum density, soil water matric potential and soil temperature on mortality of pepper caused by p.
在生长箱内控制条件下分析测定了接种体密度、土壤水分基质势和土壤温度对辣椒疫病死苗率的影响。
Soil available P was not affected by nematodes, while soil microbial biomass P increased obviously with the inoculation of nematodes.
接种线虫对土壤有效p的提高不明显，而对土壤生物量P有显著的增加。
Leaf N, P and K were higher of blueberry cultured on dark brown forest soil and meadow bog gleyed soil.
和K 含量在暗棕色森林土和草甸沼泽地土壤上较高；
The results of grey relational analysis revealed that the content of soil nutrients, in particular C and N, had a major effect on avail-P.
灰色分析的结果表明，土壤速效磷的形成主要受到土壤养分，尤其是碳、氮养分的影响。
O-P in rhizosphere soil decreased when exchange acidity and total hydrolytic acidity increased.
根际土壤o - P含量随着土壤交换性酸、水解性总酸度的增高而降低。
The amount of Al-substitution in goethite in P horizon clays of percogenic paddy soil was higher than that of other diagnostic horizon clays of paddy soil.
渗育型水稻土P层的赤铁矿含量比相应的母土低，其针铁矿铝替代量较其它水型的水稻土高。
P adsorption capacity of the soil is positively correlated with its oxalate-extractable iron and aluminum and organic matter contents and negatively correlated with P adsorption saturation degree.
土壤的吸磷能力与土壤活性铁铝和有机质含量呈正相关，与磷吸持饱和度呈负相关。
The percentage of root biomass allocated to cluster roots increased in the soil layer supplemented with P in a split-root system.
在分根系统中，白羽扇豆的排根占根系干重的比例在局部供磷（羟基磷灰石）的土层中大量增加。
The percentage of root biomass allocated to cluster roots increased in the soil layer supplemented with P in a split-root system.
在分根系统中，白羽扇豆的排根占根系干重的比例在局部供磷（羟基磷灰石）的土层中大量增加。
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