农田

The study concludes that the future of replacing oil and gas lies with cellulosic ethanol produced from low-cost materials like switch grass or wheat straw, if it is grown on agriculturally marginal land or from waste plant material.

该研究认为，用柳枝草或麦杆等低成本原料（如果种植于边缘农田或来自植物废料）生产的纤维素乙醇将是未来替代石油和天然气的希望所在。

Soil organic carbon accumulated relatively in lower soil layer in swamp meadow, poplar forest and scrub-steppe, while soil organic carbon distributed evenly in arable soils such as farmland, wasteland and plant nursery.

沼泽草甸、杨树林和灌丛草原类型在浅层土壤积累了相对较多的有机碳，而耕作类土壤如农田、弃耕地和苗圃的有机碳垂直分布则相对较均匀。

It is advanced farming technology which through the implementation of reduced tillage, no-tillage technology, using crop stalks stubble ground cover to reduce soil water erosion, wind erosion, so as to enhance the capacity of soil fertility and drought-resistance .Function and role of conservation tillage technology have been proved by practice.

保护性耕作技术是相对于传统耕作的一种新型耕作技术，起源于19世纪末的美国，通过对农田实行少耕、免耕技术，尽可能用农作物秸秆、残茬覆盖地表，以减少土壤水蚀、风蚀，从而提高土壤肥力和抗旱能力的先进耕作技术。

The field experimental results show that the order of the capabilities of protection for uncovered farmland by standing crop stubble are millet forage＞oats＞maize forage＞rape.

野外观测结果表明，不同直立作物残茬对裸露农田的保护作用草谷子＞莜麦＞草玉米＞油菜。

The engines, with many different styles, such as electrically starting, manually starting for users choices, are widely used as power equipments for farm irrigating, farm by-product processing, wood sawing, stone breaking, exploration drilling, electricity generating and boat driving.

广泛用于农田排灌、农副产品加工、锯木、碎石、钻探、发电和船舶等配套动力。

The harvest, including harvest of branches, leaves, cutting stem or the whole plant in short-period and high-yield officinal plantation of C. fortunei should be performed in autumn and winter 3-4 years or 4-5 years after planting, of which the stem should be cut at height of 10 cm.

利用农田设施栽培和山地种植的三尖杉药用林，可分别于栽植后第3~4年和第4~6年秋冬季进行枝叶采收、截干采收和全株采收，截干采收时截干高度以10 cm最佳。

Missouri lawmakers say that raising the spring flow would flood farms, endanger cities and hurt the barge industry on their stretch of the river.

高涨地春潮将淹没农田、危害城镇且破坏整条河川的游艇业。

The simulating models about the change of soil water content under plastic mulch were established by analysing the changes of soil water balance after mulching.

通过分析地膜覆盖后土壤水分平衡的变化特点，建立了地膜覆盖前后农田土壤湿度变化的模拟方程。

With the socio-economic development, extensive use of modem production technique and the implement of new land contract arid forestry policies, the cropland shelter belt system set up during 1960s-1970s in Manass River Valley, even Xinjiang, needs to be changed in ideas and production techniques and to build new system of shelter forest and adapt to the new rural area construction.

随着社会经济发展、现代生产技术的广泛应用及新的土地承包、林业政策法规的贯彻，玛纳斯河流域绿洲在20世纪60、70年代建立的农田防护林体系，需要在思想观念及生产技术等方面有相应的变化，建立新的防护林体系，适应新农村建设。

Through observation and study,the optimum designing programs are showed as follows:the cross degree between shelter belt and do minant wind direction should be more than 45 degree,the main forest belt distance should be from 150 meter to 200 meter,the sub belt distance should be from 230 meter to 700 meter,the best belt structure is sparse and transparent structure.

通过观测和研究，得出风沙区农田防护林带的走向与主风方向的交角，不能小于 45°，主林带间距 15 0m——— 2 0 0m ，副林带间距 2 3 0m——— 70 0m ，林带结构以疏透结构为最好，主林带一般由主林木 5— 6行组成，副林带由 2— 3行组成，再在迎风面和背风面配置 1行— 2行灌木和针叶

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。