固氮

The results showed that methamidophos inhibited the growth and activity of bacteria, Actinomyces and Azotobacter at different degree, but stimulated the growth of fungi; the results also showed that soil respiration and ammonification was stimulated, however, soil nitrogen fixation, nitrification and Fe－reduction was inhibited.

结果表明，甲胺磷对细菌、放线菌和固氮菌群的生长具有不同程度的抑制作用，而对真菌却有一定的刺激效应；土壤的呼吸作用、氨化作用增强，自生固氮能力、硝化作用以及铁离子价数转换作用减弱。

ALS of Anabaena flos-aquae was most easily to be affected by the two herbicides.

在受试的3种固氮蓝藻中，水华鱼腥藻的耐受能力最差。

The growth of Anabaena azollae and Anabaena azoxica under different external pH environments were studied.

利用静态实验法研究了满江红鱼腥藻和固氮鱼腥藻在不同 pH环境中的生长与环境的相互关系。

The majority of these nitrogen-fixing blue-green algae are Anabaena.

这些固氮蓝藻大多属鱼腥藻。

Of acetylene. And of three cyanobacteria, nitrogenase of Anabaena flos-aquae was most easily to be affected by the two herbicides.

在10%最佳乙炔浓度下，3种固氮蓝藻固氮酶对单嘧磺隆、单嘧磺酯表现出了不同的耐受性，其中水华鱼腥藻固氮酶活性最易受到除草剂的影响。

Nitrogen fixation caused by azotobacter was one of the important origins of nitrogen resources in alpine grassland.

固氮菌的固氮作用是高寒草地土壤氮素的重要来源之一。

It show that the best scope of valid applying azotobacter fertilizer is0.15g/kg.

因此，固氮菌肥有效施用的最佳土壤施氮量为0.15g/kg。

Hetertrophic nitrogen-fixing bacteria were the species belonged to Azotobacter and Beijerinckia through preliminary identification.

鹧鸪菜藻体上异养固氮细菌初步鉴定为固氮菌属和拜叶林克氏菌属的种类。

In order to select high nitrogen-fixing azotobacter strains, nitrogenase activity of 13 strains separated in the rhizosphere in Gansu non-leguminous crop fields were measured by acetylene reduction method. Also the fertilization effect of the strains on spring wheat was investigated via pot experiment.

为挑选具有高固氮能力的自生固氮菌菌株，用乙炔还原法对甘肃省春小麦和玉米等非豆科作物根际土壤中分离所得的13株菌进行固氮酶活性测定，并通过盆栽试验对其进行春小麦肥效试验。

Some reports indicate reduction of legume BNF by mineral N is dependent on host species and form of N available.

一些报告还指出，通过矿质氮引起的豆类作物生物固氮的减少与寄主品种和有效氮的形态有关。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。