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- Variation of soil organic phosphorus fractions, and relationship of organic P and its fractions, with soil organic matter and readily available P were studied with Bowman-Cole method. 采用Bowman和Cole提出的有机P分组方法,对长期施肥条件下土壤有机P的组成变化以及有机P及其组分与有机质、速效P的关系进行研究。
- soil organic P 土壤有机磷
- Inorganic P(Pi) occupied the most part of soil P and accounted for 79.4% on average, then organic P(Po) accounted for 20.6%. 从磷的组成来看;本研究土壤以无机磷为主;平均占总磷量的79.;4%25;有机磷平均占总磷量的20
- The soil organic matter and total N stabilize basically, available P increase while alkaline hydrolyze N decrease obviously in the cornrice rotation. 玉米、稻连作土壤有机质和全氮基本稳定，有效磷呈上升趋势，碱解氮和速效钾下降趋势明显。
- Corn economic yield and biological yield were significantly related with soil organic matter, total N, alkali-hydrolyzable N, total P, and availabl P. 玉米产量及生物量与土壤有机质、全氮、碱解氮、全磷、速磷相关性达极显著或显著相关。
- The soil organic matter and total N stabilize basically,available P increase while alkaline hydrolyze N decrease obviously in the cornrice rotation. 玉米、水稻连作土壤有机质和全氮基本稳定，有效磷呈上升趋势，碱解氮和速效钾下降趋势明显。
- Water storage in soil organic horizons is a further factor to consider. 在土壤有机质中的水分贮积是一个值得进一步考虑的因素。
- The results show that soil total P (P T), inorganic P, organic P, Olsen P and Bray P are high in MNPK, 1.5 (MNPK), MNPK (Soybean) and M treatments, followed by NP, PK, NPK, and SNPK treatments, and low in the treatments without P (N, NK and CK 2). 结果表明 :长期施磷 ;特别是磷肥和有机肥配合施用能明显提高土壤全磷 (PT)、无机磷、有机磷、Olsen- P和 Bray- P含量 .
- Tang G Y,Peng P Q,Su Y R et al.Contents of soil organic carbon under various land-use types at farmland in Dongting Lake region[J].Resour.Environ.Yangtze Basin,2006,15(2):219-222. [15]唐国勇;彭佩钦;苏以荣;等.;洞庭湖区不同利用方式下农田土壤有机碳含量特征[J]
- SM increased soil organic matter and available N, P, and K to varying degrees and PM didn't, while soil organic matter in the surface layer decreased in PM treatment. 地膜覆盖兼有显著的增温效应，而秸秆覆盖土壤温度却明显低于对照，但在冬季低温短日照条件下，地膜覆盖土壤温度反而低于秸秆覆盖；
- Bacteria and fungi are other important soil organisms. 细菌和真菌是另一类重要的土壤有机体。
- Soil organic matter is the product of microbial decomposition of plant and animal residues. 土壤有机质是微生物分解植物和动物残体的产物。
- The electric conductivity,activity of urease,alkaline phosphatase,phosphatase and proteinase had distinct positive linear correlation with soil organic matter(R2=0.888,0.993,0.958,0.948,0.911 respectively,P<0.01). 电导率、脲酶、碱性磷酸酶、中性磷酸酶、蛋白酶与有机质存在极为显著的线性正相关(R2分别为0.;888、0
- A major portion of the soil organic matter is derived from the added and residual vegetative material. 加进去的和残留下来的植物物质则是土壤有机质的主要来源。
- Soil organic matter,available Ca,Mg,S,Fe,Mn,Cu and Si were abundant,while available N,Zn and B were deficient,and the deficiency rates were 62.5%,62.5% and 87.5% respectively. The CV(coefficient of variation) of soil available P and K changed greatly. 有机质、有效钙、镁、硫、铁、锰、铜以及硅的含量均较丰富; 碱解氮、有效锌、硼普遍缺乏;其缺乏数分别占总样本的62.;5%25、62
- The following processes can reduce the sludge production,such as membrane bioreactor,ozonization,micro organism p... 污泥减量化技术则包括膜生物反应器、臭氧法、微生物捕食法和水解酸化工艺。
- DCCA ordination showed that soil organic matter content was the decisive factor to the development of communities. DCCA排序进一步表明了土壤有机质含量是所有因子中对植物群落发展起决定性作用的主要环境因素.
- The portions of P fractions were Fe-P>OrgP>OcP>Ca-P>Al-P>LP. (5) The seasonal changes of P fractions in sediments: the maximum value of TP and Fe-P were recorded in autumn, while organic P and occluded P reached their minimum value at that time. 钙磷(Ca-P)、有机磷(OrgP)和闭蓄磷(OcP)随沉积深度的变化复杂。
- The major loss was residual P and organic P Of the total lost, 52% was tYom residual P, whereas 16% originated from NaOH-po, Residual P and NaOH-Po, were the two most important resources of phosphorus in the rubber plantation tbr long term cultivation. 其中ResidualP和NaOH－Po的损失量最高，分别占全磷损失量的52%25和16%25，它们是长期耕作条件下热带胶园土壤磷两种最重要的有效磷源。
- Zn situation of vegetable garden soils and its relation to soil organic carbon. 菜园土壤锌营养状况及其与土壤有机碳的关系。
