肥料

Speaking of ecological agriculture makes me think of earlier agriculture production methods that used night soil as fertilizer. This should be considered as a type of ecological agriculture.

说到生态农业，我就想起以前用大粪做肥料的农业生产方式了，这应该算是生态农业的一种吧。

Selling human waste products as fertilizers became much less common after World War II, both for sanitary reasons and because of the proliferation of chemical fertilizers, and less than 1% is now used for night soil fertilization.

二战以后，将人类的排泄物作为肥料售卖变得很少见，出于卫生的考虑及化肥的普及，直至现在，只有不到1%的人仍在用农家肥。

To ward off an outbreak, Davis says, the government would have to prevent the use of night soil as fertilizer, build cement irrigation ditches, and ensure area villagers access to clean water.

为避免血吸虫病的爆发，Davis说，政府应避免使用粪便作为肥料，修建水泥灌渠，并确保当地居民接触干净的水。

Based on the long-term field experiments, the relationships between soil nitrogen balance, nitrogen utilization efficiency and soil nitrate were studied.

利用长期肥料试验资料研究了土壤氮素平衡、氮肥利用率和土壤硝态氮之间的相互关系。

So biological nitrogen fixation has become one of the main directions for today's fertilizer development in the world.

生物固氮不仅固氮量大，而且还可提高土壤肥力，改善土壤条件，不污染环境；更为重要的是它有取之不尽，用之不竭的廉价氮源，成本低，利用率高，因此，生物固氮是今后肥料发展的主要方向之一。

It would be meaningful to screen Rhizobium strains with high symbiotic nitrogen fixation activity for developing microbial manure agents.

是营养价值很高的饲用作物，也是北京地区大力发展的牧草品种之一，筛选与之共生固氮的根瘤菌，用于微生物肥料的生产，具有重要意义。

Breeding of nitrogen-fixing bacteria is the basis for nitrogen-fixing microbial fertilization.

固氮微生物菌种选育是固氮微生物肥料生产应用的基础。

Urea is one of important fundamental fertilizers, it is a kind of solid nitrogenous fertilizer with much higher nitrogen content.

尿素是重要的基础肥料之一，是一种含氮量最高的固体氮肥。

This paper studied the low efficiency of nitrogenous fertilizer of our county,the cause of fertilizer losing and its calamity.

本文主要探讨了目前我国氮肥利用率低下，肥料损失的原因及危害。

Irrigation Training and Research Center, Calif Polytechnic State Univ.;San Luis Obispo;CA , 1996,null

李伏生%陆申年灌溉施肥的研究和应用植物营养与肥料学报， 2000，2

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。