田间的

Eighty percent of the potassium taken up by cotton was from nonexchangeable potassium of the soil.Both the pot and the field experiment showed a same result that the content of soil nonexchangeable potassium will no longer decrease when it reached a certain level,while nonextractable potassium with 1 mol/L HNO3 will continue to decline.

棉花吸收的钾素中有80%来自于土壤非交换性钾，盆栽生物耗竭与连续种植10年棉花的田间土壤，具有相同的结果，土壤交换性钾在下降到一定程度后不再下降，而1mol/LHNO3不能提取的钾一直在下降。

The inhibitory activity of Echcin to 14 strains of phytopathogenic bacteria was tested using paper plate method.

采用纸碟法测定了Echcin 对5 个属植物病原细菌共14 个菌株的抑制作用，琼脂稀释法测定了Echcin 对12 种植物病原真菌的抑制作用，在此基础上开展了Echcin 对番茄早疫病和稻白叶枯病的温室盆栽试验，同时开展了Echcin 对小麦纹枯病的田间小区试验。

Based on a systematic field investigation and laboratory experiments, the structures of arthropod communities and the evalution of dominant predatory enemies in cabbage fields of different seasons were studied. The main results were as follows:1 The structures and their dynamics of arthropod communities in cabbage fields1.1 Species composition and population dynamics of each species of the arthropodcommunities in the cabbage fieldsThe research results showed that the occurrence of Pieris rapae in spring cabbage fields was relatively grave.

本文在田间系统调查和室内试验的基础上，对不同季节甘蓝田节肢动物群落结构及捕食性天敌优势种的评价进行了研究，主要结果如下：1甘蓝田节肢动物群落结构及其动态1.1节肢动物群落物种构成和各种群数量动态研究结果表明，春甘蓝田菜青虫的发生比较严重，菜青虫在调查期间种群数量呈上升趋势，5月初高峰期平均每株甘蓝接近20头；菜蚜与小菜蛾的发生相对较轻，菜蚜在5月中旬有个明显高峰。

The result in efficacy trials against Plutella xylostella indicated that some kinds of photoprotecting avermectin had the most dramatic effect on the 3 day after application.

对小菜蛾的田间药效表明，几种光保护型阿维菌素对小菜蛾的防效在3d后差异显著，混合UV-P+BHA的阿维菌素在1、3和7d的防效分别为84.78％、95.17％和98.50％。

By using β-NADPH-diaphorase histochemical staining technique,wefound for the first time that NOS activity was detected in the epithelium of airpathway and endothelium of vessels but was not detected in the small vessels(ID＜100μm),and the NOS express in pulmonary vascular endothelium of preascitic andascitic broilers were elevated,especially in the endothelium and smooth muscle layer ofsmall vesseles with thicker walls and of muscularized nomuscular artery in asciticbroilers.

本研究从田间自然发生腹水症的肉鸡群中选取正常肉鸡、亚临床腹水鸡和腹水鸡为实验对象，通过比较这三种肉鸡血流动力学、心电图、动静脉血血气、肺外动脉舒张反应性、肺血管结构以及肺组织一氧化氮合酶的活性和分布等方面的不同，探讨了肺动脉舒张能力在肉鸡肺动脉高压形成中的作用和机制。

Based on the field experiment data of winter wheat blending irrigation by saline water in Nanpi Ecological Agriculture Experimental Station of the Chinese Academy of Sciences from 2002 to 2005, the effects of blending irrigation with mineralization of 0.84, 3, 4 and 5 g/L on the soil salification rate, soil sodium adsorption ratio of soil saturation extract as well as winter wheat yield and yield constitute factors irrigated were studied in order to determine upper limit of irrigation mineralization suitable for the location.

根据中科院南皮生态农业试验站2002～2005年的冬小麦微咸水混灌田间试验资料，以淡水为对照研究了矿化度分别为3、4、5 g/L的微咸水混灌对土壤积盐率、土壤饱和浸提液钠吸附比、冬小麦产量和产量构成因素以及水分利用效率的影响，从而确定适宜的灌溉水矿化度上限。

In this experiment, methods of artificial inoculation were used to evaluate 17 species (including 26 types), 2 mutants, 3 cultivars, and 4 hybrids of Malus for their resistance to Valsa Mali. After 3 years repeated trials, it showed that 7 of them are highly resistant 2 are resistant, 2 are medium resistant and others are different grades of susceptible resources.

在1983年接种方法研究的基础上，于1985—1987年采用人工田间砸伤接种法，对苹果属17个种的26个类型、2个变种、3个品种和4个杂交种，共35份种质资源材料进行抗腐烂病的系统鉴定，经3年重复，鉴定出高抗级种质资源7份，一般抗2份，中抗2份，其它均为感病各级的资源。

The pyramiding lines with four resistance genes showed higher level of resistance to five races of Xanthomonas oryzae pv.

用华南地区的5个白叶枯病病原菌小种进行田间接种的试验表明，4个抗性基因聚合系的抗性水平高于只带1个抗性基因的近等基因系。

The pyramiding lines with four resistance genes showed higher level of resistance to five races of Xanthomonas oryzae pv. oryzae found in South China than the NILs with only one resistance gene.

用华南地区的5个白叶枯病病原菌小种进行田间接种的试验表明，4个抗性基因聚合系的抗性水平高于只带1个抗性基因的近等基因系。

The experiment was carried out to study the effects of combined application of organic fertilizers on the control of soilborne diseases and the regulation of soil microbial diversity in a tomato field by using the method of Biolog.

在田间试验条件下，采用施用基肥和追肥的方法，结合Biolog技术，分析了不同有机肥配合施用对番茄土传病害的防治效果及对土壤微生物群落多样性的影响，并探讨了有机肥防治作物土传病害的机理及意义。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。