农田

D ear friend, replied the uncle, my young nephew has a snug berth, a nice bit of money in hand, and plenty of bread to break, besides he has quite as many patches as I have. And as he spoke, he slapped the patches on his trousers, but in that district small pieces of land were called patches also.

"亲爱的朋友，"舅舅回答，"我那年轻的外甥有一个温暖的店铺，手里有亮晶晶的钱，有许多面包等着招待宾客，另外他和我一样有很多农田，"(他一边说着一边拍着他的裤子，在那个地区小块农田被称做补丁)。

The market is also crimped by a rule that no more than 20% of farmland in any county may lie fallow.

市场还受到一条规则的束缚：任何县中休耕农田不得超过农田总数的20%。

In order to find out completely the soil-wheat contaiminated by heavy metals in Tianjin sewage farm, we collect samples on the dry land and examinate contents of heavy metals in soil-wheat system. Firstly, the anthor evaluates that soil irrigated by sewage that has been contaminated slightly, the main polluting factors are Cd and Zn, and then the anthor evaluates soil according to different regions, soil types and irrigating water. Secondly, the anthor analyzes content and enrichment ability of heavy metals in different part of wheat, evaluates wheat is contaiminated by Cd widespreadly, only few samples polluted by Zn.Finally the anthor put up correlative analysis about heavy metal contents in the soil-wheat system, as well as plant enrichment coefficient and some physico-chemical properties of soil, and establishes a prognostic model about heavy metal content among wheat spike, soil, soil types, PH, organic matter and salinity with the quantifying theory.The prognostic accuracy of primarily contaminative factors is the best with compound correlative coefficient examining, the model can be founded.With improvement of living level, people need cleaner food.

为全面了解天津市污灌区农产品生产地土壤和旱地作物小麦的重金属污染状况，我们于2004～2005年对全市污灌区的土壤和小麦进行了采样，在对该区土壤—小麦系统中六种重金属元素(Cd、Cu、Pb、Zn、Cr和Ni)的含量进行检测的基础上，本文首先分析评价了污灌区农田土壤的环境质量总体已达到了轻度污染水平，主要的污染因子是Cd和Zn，同时对污灌区农田土壤分区县、土壤类型和不同灌水类型进行了评价；然后分析了重金属在小麦不同部位的含量与富集能力，评价了污灌区旱地作物小麦普遍遭受了Cd的污染，只有个别样点遭受了Zn的污染；最后对土壤—小麦系统重金属含量间以及植物富集系数与土壤部分理化性质间进行了相关分析，由于土壤类型是定性变量，本论文以数量化理论建立了小麦穗实中重金属含量与土壤中重金属全量、土壤类型、PH值、有机质和全盐量间的预测模型，经复相关系数检验，污灌区主要的污染因子Cd和Zn的预测精度最高，模型可以成立。

The study was based on long-term field experiment in Hailun Experimental Station of Agricultural Ecology, Chinese Academy of Sciences.

在中国科学院海伦农田生态系统国家野外科学观测研究站，应用长期定位试验研究了干旱年份不同施肥处理下的黑土农田水分状况。

In deserted field, the numbers of soil animals in layer A and B change with the temperatures accordingly except September, but number of layer C reduced in March.

虽然农田中土壤动物的个体数在调查期间小于绿地，但农田中A层的孔隙度则大于绿地，这也表明，土壤动物个体的分布并不只受孔隙度的影响。

His system, known grandiosely as a 'large aperture scintillometer', consists of a laser on one side of a field, a telescope on the other, and a lot of clever computing to interpret what the telescope sees. What that computing is trying to measure is how much the laser beam twinkles as it passes across the field.

Kleissl的系统有一个响亮的名字："大眼睛闪烁仪"，它由以下几部分构成：农田某一边放置一个激光器，另一边有一个望远镜，然后通过大量电脑智能分析，以解析望远镜收集得来的数据：激光器发出的激光在穿过农田，到达望远镜之前闪烁的次数。

Recent years, it is a trend that the expenditure of land arrangement is falling and the investment ratio of irrigation and drainage engineering and farm roads is with time.

田间道路工程是农田人工物质与能量、农产品输出的廊道，是改善农业生产条件的必要措施，并由其与林带、渠系等将农田基质划分为不同的斑块，共同形成农田景观。

Identifying basic farmland protection areas must be resolutely rectified prior basic farmland "is being drawn closer together, and is bad is not superior" approach, focusing on solving basic farmland protection areas and building use areas, land reclamation areas, such as the prohibition of other types of reclamation district land use zones "Next margin." Where the railway.

确定基本农田保护区时，要坚决纠正前一时期基本农田&划远不划近，划劣不划优&的做法，着重解决基本农田保护区与建设用地区、土地开垦区、禁止开垦区等其他类型土地利用区&接边&的问题。

Through development of multiple cropping to exploit the sunlight resources, thermal resources, water resources and soil resources of farmland in summer fallow period is very helpful for improvement of soil fertility and to prevent fie...

发展多熟种植，开发利用夏闲期农田光热水土资源，有助于改善农田土壤肥力、缓解农田生态系统退化、增加农区畜牧业饲料来源，实现农牧结合，增加农牧民经济收入。

Farmland protect-system project can protect the farmland from natural disaster and ensure that the land use safe,this paper makes a optimized design on Farmland protect-system,which including choise of the tree breed,the structure and the wide of the shelter belt,and so on.

农田防护工程是为保护整理区土地利用活动的安全以及免受自然灾害危害而建设的农田防护工程，本论文主要从树种的选择，林带的结构，林带的间距等方面对农田防护林体系作一优化设计。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失