磷

The effect of N-phosphoamino acids on plant cells'membrane permeability was investigated by osmotic method. It was found that in all N-phosphoamino acids, only some phosphoryl polar amino acids such as DIPPSer, DIPPThr, DIPPHis, DIPPAsp, DIPPGlu, DIPPAsn and free serine, threonine could increase the water permeability in plant cell membrane. For example, after 20min. treatment by 1. 5mM DIPPSer, the deplasmolysis time of onion cells was shortened 50%.

三、通过透性实验研究了N-磷酰化氨基酸对洋葱、豌豆等植物细胞膜水透性及溶质透性的影响，发现在所有的N-磷酰化氨基酸及自由氨基酸中，仅有部分N-磷酰极性氨基酸和自由的丝、苏氨酸对植物细胞膜上水透性有增强作用，如1.5mM N-磷酰化丝氨酸可使洋葱细胞质壁复原时间缩短一半以上。

Hydroxy-5, 10-dihydrophenophosphazine 10-oxide (1) reacted with SOCl2, and then with MeONa in MeOH to give a methyl phosphinate (2) which can be converted to a dinitro compound 3 (62%) by nitration and the resulting dinitro compound 3 can further be converted to 2, 8-diamino-10-methoxy-5, 10-dihydrophenophosphazine 10-oxide (4, 71%) by hydrogenation over Pd/C (w = 0.05). And the effect of amount of Pd/C (w = 0.05) on the reduction was also studied.

10－羟基－5，10－二氢磷杂吖嗪－10－氧化物（1）经醯氯化、甲基化得到10－甲氧基－5， 10－二氢磷杂吖嗪－10－氧化物（2），2经硝化得到10－甲氧基－2，8－二硝基－5，10－二氢磷杂吖嗪－10－氧化物（3，62%）。3在Pd／C（w = 0.05）存在下，用氢气还原为2，8二氨基－10－甲氧基－5，10－二氢磷杂吖嗪－10－氧化物（4，71%），考察了Pd／C（w = 0.05）用量对氢化还原反应的影响。

Cold working strain phosphating includes drawbench phosphating,cold extrusion phosphating and cold stamping phosphating .

冷加变形磷化主要包括拉丝磷化、冷挤磷化、冷冲磷化。

The goyazite ore bed and kaolin claystone unconformably overlap the Qinglongshao breccia phosphate, which is characterized by continental facies phosphorite, without the shallow-sea characters of primary sedimentary structure.

野外工作研究发现，青龙哨角砾状磷块岩顶板的磷锶铝石矿层和高岭土黏土岩二者呈超覆式不整合接触。深入研究发现其具有陆相磷块岩的许多特征，而没有浅海相磷块岩的原生沉积构造特征。

This paper reviewed the research on dynamic and balance of soil nutrient pool under long-term fertilization conditions,mainly about some active aspects which included dynamic variations of total nitrogen,available N,total phosphorus,available P,total potassium,available K,and organic carbon in soil; dynamic variations of ammonium N,amino acid N,amino sugar N,unknown N,non hydrolyzable N and microbiomass N in soil nutrient pool; changes of Ca2-P,Ca8-P,Al-P,Fe-P,O-P,labile organic P,moderately labile organic P,moderately stable P,highly stable P and microbiomass P in soil; changes of loosely,stably and tightly combined humus,humic and fulvic acids in soil carbon pool; effects of long-term fertilization on organic-mineral complex status in soil; nutrients cycling and balance of agricultural soil nutrients pool.

扼要地概述了国内外近年来关于长期施肥条件下土壤养分库的动态与平衡方面的研究成果。主要介绍并讨论了土壤氮、磷、钾养分全量及有效量的动态变化，土壤有机碳含量的动态变化；铵态氮、氨基酸态氮、氨基糖态氮、酸解未知态氮、非水解残渣氮及微生物体氮在土壤氮库中的动态变化；Ca2 P、Ca8 P、Al P、Fe P、闭蓄态磷，活性有机磷、中度活性有机磷、中稳性有机磷、高稳性有机磷及微生物体磷在土壤磷库中的动态变化；土壤碳库中松结态腐殖质、稳结态腐殖质、紧结态腐殖质以及富里酸和胡敏酸的动态变化；长期施肥对土壤有机无机复合状况的影响；农田土壤养分库的养分循环与养分平衡。

The P release contents in the runoff sediments of the lateritic red soil of granite, lateritic red soil of sand shale and limestone soil reached the maximum in 9,7and 12 days, respectively. The phosphorus concentration on 4, 1 and 5 days exceeded river acceptable DRP critical value, respectively; therefore, it had obvious influences to water eutrophication.

花岗岩赤红壤、砂页岩赤红壤和石灰岩土径流沉积物中磷释放量达到最高所需时间分别为9天、7天和12天，磷浓度分别在第4天、第1天和第5天超过河流可接受的可溶态活性磷的临界值，因此土壤径流沉积物中磷的释放对水体富营养化具有明显的影响。

The chemical analysis of N, P and K in organic fertilizer is presented: sample is decomposed by sulfuric acid-hydrogen peroxide and prepared to be a solution. N can be determined by NC-2 model quick N analysis set, P by chinoline molybdic acid method and K by tetraphenylboron potassium, needless of spectral photometer and flame photometer, the method is available when the content of N, P or K is over 0.1% with desired accuracy and precision.

介绍用化学分析方法测定有机肥料氮、磷、钾的含量，即样品经硫酸-过氧化氢消化后，制备待测溶液，分取待测溶液用NC-2型快速定氮仪测定氮，用磷钼酸喹啉重量法测定磷，用四苯硼酸钾重量法测定钾，不需使用分光光度计和火焰光度计，适宜一般复混肥料厂采用，对含氮、磷、钾分别达0.1％以上的样品均可用本法测定，方法的准确度和精密度能满足生产的要求。

Phosphorus presented in crops such as grains, beans, oil-bearing crops is in the form of phytate-phosphorus. The utilization rate of phosphorus in phytate by monogastric animals was very low because of the lack of phytase.

在动物饲料中富含磷的谷物、豆类和油料等作物中，磷的基本贮存形式是植酸磷，因单胃动物体内缺少能分解植酸的酶很难利用这些植酸中的磷，其利用率极低。

The results demonstrate that Myriophyllum spicatum could tolerate higher phosphorus concentrations than Hydrilla Verticillata. However, the optimal phosphorus concentrations for the growth of both Myriophyllum spicatum and Hydrilla Verticillata exceed the phosphorus concentrations in eutrophic water bodies.

实验结果表明，穗花狐尾藻比轮叶黑藻更能耐受高质量浓度的磷，并且两种沉水植物适宜生长的磷质量浓度都高于目前富营养化湖泊水体中的磷质量浓度，也远高于湖泊富营养化的磷质量浓度标准（0.02 mg·L-1）。

The 33P, 32P double label tracing technique was carried out to study the effective fertilization of phosphorus for citrus plantation in mountain area of northern Taiwan. 33P labelled orthophosphoric acid was applied in a standard position with respect to the tree and 32P labelled orthophosphoric acid at a location and rate corresponding with the treatments The results showed that the variability o1 the 33P/32P ratios (49%) was much lower than that of single 32P activity counts (72%).

应用磷－33，磷－32重复标识法，研究本省北部山区柑园有效施肥问题；其法将磷－33标识正磷酸，依标准法施用於根羣密叶区域，又以磷－32标识正磷酸以不同施用量，处理於不同深度，结果显示以33P/32P比率所得试全变异(49%)达较单独测算32P放射活性者(72%)为小。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐