农田

These projects are: the ''three norths'' shelterbelts (the western area of Northeast, and the northern parts of North and Northwest China), the shelterbelts along the upper and middle reaches of the Yangtze River, the coastal shelterbelts, the plain farmland shelterbelts, the Taihang Mountains afforestation project, the anti-desertification project, the shelterbelts for comprehensive control in the Huaihe River and Taihu Lake basins, the shelterbelts for comprehensive control in the Pearl River basin, the shelterbelts for comprehensive control in the Liaohe River basin, and the shelterbelts along the middle reaches of the Yellow River.

这十大林业生态工程是：&三北&(东北西部、华北北部、西北地区)防护林体系工程、长江中上游防护林体系工程、沿海防护林体系工程、平原农田防护林体系工程、太行山绿化工程、防治沙漠化工程、淮河太湖流域综合治理防护林体系工程、珠江流域综合治理防护林体系工程、辽河流域综合治理防护林体系工程、黄河中游防护林体系工程，规划造林总面积1.2亿公顷。

The lime soil from the winter fallow field in which Chinese vetch green manure was once planted and the natural barren field in Guilin Village were taken to determine urease activity and soil fertility of the lime soil.

方法］取桂林毛村常年种植过紫云英绿肥的冬闲田和自然抛荒农田中的石灰土，测定石灰土的脲酶活性和土壤肥力。

Conventional tillage with bare ground, conventional tillage with straw incorporated and no-tillage with straw mulch were studied in the Hexi corridor of Gansu provience. The result showed: on summer fallow NTS stored soil water more than CTB and CTS by 30.62mm and 23.91mm, respectively; the winter storage irrigation quotas should be reduced to 900~1350 m^3/hm^2 on winter fallow; evaporation controlling rate arrived 38.1% and 7.3% at winter storage irrigation quotas 975m^3/hm^2 and 2100m^3/hm^2, respectively; NTS did not reduce ET during the spring wheat growth stage; yields different between treatments was not significant.

对甘肃河西内陆河灌区采用常规耕作、秸秆还田和覆盖免耕技术的农田水分效应进行研究，试验结果表明：在夏季休闲期，覆盖免耕比常规耕作和秸秆还田多贮水30.62mm和23.91mm；冬季休闲期可将大定额的储水灌溉减少到975~1350立方公尺/hm^2；覆盖免耕抑制蒸发率在储水定额为975立方公尺/hm^2时达到最大值38.1%，而在2100立方公尺/hm^2时最小为7.3%；覆盖免耕在作物生育期并没有减少土坡耗水量；各处理产量之间没有显著差异。

Under the condition of sufficient water supply, ETa can be calculated with ETp; While, under the condition of the soil wilting point was smaller than 0.37, ETa equals to 0; when under the condition of insufficient water supply, the equation could be expressed as ETa = Sw×ETp.

在土壤水分供应充足的情况下，农田实际蒸散量与潜在蒸散量相等；当土壤含水量低于萎焉点(0.37)时，则实际蒸散量近似为零；在水分胁迫的条件下，即当土壤水分供应系数在(0.37，1)之间时，则ETa=S_w×ETp。

WASHINGTON — Concerns grew Thursday that Hurricane Katrina could have wide-reaching effects on the nation's economy, causing record gasoline prices to surge even higher, key agricultural crops to rot in Midwestern fields and warehouses, and some of the nation's troubled airlines to collapse.

华盛顿－星期四，人们愈加担心卡特里纳飓风会对国家经济产生广泛影响，使创纪录的油价继续飙升，中西部农田和仓库里的主要农作物腐烂，并使一些处于困境中的国有航空公司倒闭。

Shuozhou City took the lead into the "well-advanced villages," and the list of hundred Shanxi. Since 2002, the acceptance of the provinces, cities and districts to create safe Shanxi, party building, comprehensive management, including Health, armed, the Chief of openness, the repair of dangerous buildings in primary and secondary schools, the village of Tung Oil, ecological animal husbandry and the construction of basic farmland and the scene Eighteen Council review.

率先进入了朔州市&小康建设先进乡&和三晋百强之列。2002年以来，接受了省、市、区创建平安三晋、党建、综治、计生、武装、政务公开、中小学危房改造、村通油路、生态畜牧暨基本农田建设等十八次现场会的检阅。

The results showed that ridge and furrow cultivation changed micro-topography of farmland and increased soil water content of furrow by collecting the runoff generated from ridge, in favor of downward movement of soil water.

结果表明：垄沟耕作改变了农田微地形，利用垄上降雨顺垄流人沟中，从而拦蓄部分径流，相对增加了沟中土壤蓄水，有利于水分向下运移。

Today, the hybrid rice variety developed by Chinese scientists has been adopted for planting in over three millionhectares and has become a "golden key" to meeting China's own food needs and boosting world cereal production.

今天，300多万公顷的农田种上了中国科学家研制的杂交水稻，杂交水稻已经成为满足中国本国粮食需求和促进世界谷物产量的&金钥匙&。

Today, the hybrid rice variety developed byChinese scientists has been adopted for planting in over three million hectares and has become a "golden key" to meeting China's own food needs and boosting world cereal production.

今天，300多万公顷的农田种上了中国科学家研制的杂交水稻，杂交水稻已经成为满足中国本国粮食需求和促进世界谷物产量的&金钥匙&。

Key words: organic-inorganic specialty fertilizer for tobacco;nutrient formula;process;filed trial

有机-无机烟草专用肥；养分配比；生产工艺；农田试验

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。