2) calcareous soil with low concentration available P
低磷的石灰性土壤
1.
Effects of applying inorganic P and wheat straw on the microbial biomass P and microbial P concentration in a calcareous soil with low concentration available P
通过室内培养试验,向低磷的石灰性土壤加入磷(0、25、50、100mg P·kg-1,KH2PO4)和小麦秸秆(5g C·kg-1),25℃下培养90d,研究在施肥和秸秆还田条件下土壤微生物量磷及微生物含磷量的变化特点,及其与土壤有效磷之间的关系。
3) Low-phosphorus red soil
低磷红壤
4) phosphorus-fixation of soil
土壤固磷
5) soil phosphorus
土壤磷素
1.
Effects of Long-term Fertilization on the Spatial Distribution, Availability and Transformation of Soil Phosphorus in Loess Plateau;
黄土旱塬长期定位施肥对土壤磷素分级、空间分布及有效性的影响
2.
Experiments of field runoff plots,which were conducted at vegetable plots in Hongsheng town of Wuxi city—the typical region of Taihu Basin,were designed to assess the effects of different rainfall intensities on soil phosphorus runoff loss from vegetable plots by artificial rainfall simulations.
以太湖流域典型区域无锡市近郊区鸿声镇的蔬菜地为研究对象,采用人工模拟降雨的方法,通过野外径流小区试验,研究了不同雨强对菜地土壤磷素径流流失的影响。
3.
The effects of different phosphorus levels (0,30,75,150kg/hm2) on characteristics and forms of soil phosphorus loss in runoff by artificial rainfall studied.
结果表明,不同形态磷素随降雨-径流过程的变化趋势基本一致,即初始阶段浓度大且下降速度快,,大约产生径流20min后,浓度下降变得缓慢,直到最后趋于稳定;在整个降雨-径流过程中,颗粒态磷(PP)占总磷(TP)72%~87%,是土壤磷素径流流失的主要形态。
6) soil phosphorus
土壤磷
1.
This paper brief introduction about the research of soil phosphorus lead Eutrophication,the existing of soil phosphorus loss and it's environmental impact at home and abroad is summarized,the existing research insufficiency at home and abroad is analyzed,and the future development trend of soil phosphorus non-point source pollution research is discussed.
土壤磷素的农业非点源污染是导致水体污染的最主要原因之一。
2.
The article overview the people of the past study the phosphoric ratings method and results,analyses limitations on the tra- ditional soil phosphorus fractionation scheme,points out the function of the studies result that assessment of soil phosphorus fertility.
综述了前人研究磷的分级方法及成果,分析了传统土壤磷素分级方法的局限性,指出了其研究结果在评价磷素肥力中的作用。
3.
By analyzing the status of soil phosphorus in Guangdong Province,we discovered that risk and quantity of soil phosphorus loss increase rapidly and it severely pollutes the aquatic environment.
土壤磷素的农业非点源污染是导致水体污染的最主要的原因之一。
补充资料：低磷生铁
分子式：
CAS号：
性质：含磷量较低(一般应低于0.03％)的生铁，用于冶炼低磷钢、极低磷钢。适当的含磷量可增加金属液体的流动性，提高钢的强度、耐大气腐蚀等性能。但含磷量超过一定范围会损害钢铁的塑性、韧性、焊接性、电磁性能等。生产低磷钢、极低磷钢必须使用低磷生铁。高炉炼铁时对磷含量不能作任何控制，生铁中的含磷量完全取决于所用的原料，所以冶炼低磷生铁必须选用含磷低的铁矿石，或者进行铁水预处理，降低其含磷量。
CAS号：
性质：含磷量较低(一般应低于0.03％)的生铁，用于冶炼低磷钢、极低磷钢。适当的含磷量可增加金属液体的流动性，提高钢的强度、耐大气腐蚀等性能。但含磷量超过一定范围会损害钢铁的塑性、韧性、焊接性、电磁性能等。生产低磷钢、极低磷钢必须使用低磷生铁。高炉炼铁时对磷含量不能作任何控制，生铁中的含磷量完全取决于所用的原料，所以冶炼低磷生铁必须选用含磷低的铁矿石，或者进行铁水预处理，降低其含磷量。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条