农田

But the effects of these loads of nitrogen and phosphorous extend beyond the field and past the growing season.

但是，土地中的氮和磷的影响扩散到了农田之外，且持续到生长季节之后。

The study indicated that Choerospondias axillaries cropped with peanut wasn't optimum agroforestry model and it couldn't be extended blindly in subtropical China, that N〓-fixing shrub should be chosen to intercropped in farmland rather than tree, and that shade tolerance plant should be chosen to intercropped in orchard garden or man-made forest rather than photophilous plant in alley cropping system.

总之，花生南酸枣间作不是低丘红壤地区优化农林间作模式，不适宜盲目发展。在红壤农田系统中实行农林间作应优先选择固氮灌木，而非高大的乔木；在果园或人工林系统中实行农林间作应优先选择耐荫植物，而非花生等喜光作物。

For forest, grassland and river ecosystems, phreatophyte should be applied to, promoting the primary succession of the ecosystem. For farm and urban ecosystems, the main crops and pollution-resisting ornamental plants should be selected for the purpose of agricultural production, landscapes construction and bioremediation so as to control the speed and direction of secondary succession of these ecosystems.

对于森林、草地、江河等自然生态系统，植被选择应以原生种类为主，以促进生态系统进行原生演替；而农田、城市绿地生态系统，植被恢复应以生产生活、景观营造、生物修复为目的，宜选择当地主要优势农作物、观赏性好、抗污染的植物，以控制生态系统次生演替的方向和速度。

The results indicated that the area of SOC increase after 20 years was 621.3 km2 and the increase was 0~5 g/kg and 5~10 g/kg, but that of decrease was 38.4 km2 .The areas of SOC changes in soils derived from phyllite, granite, red sandstone, Quaternary red clay and purple shale were 361.7 km2, 144.7 km2, 76.5 km2, 48.7 km2 and 27.8 km2, respectively. The areas of SOC changes in soils with elevations below 300 m, 300~500m, 500~800m and above 800 m were 358.9 km2, 200.2 km2, 62.9 km2 and 28.0 km2, respectively.

结果表明， 20 a来，兴国县农田土壤中土壤有机碳增加的面积为621.3 km2，减少的面积为38.4 km2，增幅主要在0~5 g/kg和5~10 g/kg；千枚岩、花岗岩、红砂岩、第四纪红粘土和紫色砂页岩发育的土壤中有机碳变化量分布的面积分别为361.7 km2、 144.7 km2、 76.5 km2、 48.7 km2和18.0 km2，海拔在300 m以下、 300~500 m、 500~800 m和800 m以上的土壤中有机碳变化量分布的面积分别为358.9 km2、 200.2 km2、 62.9 km2、 28.0 km2。

This paper analyzed the development history and actuality of rock picker in recent years.

针对上述问题，对国内外土壤捡石机的研究和应用现状、发展历史进行了研究，分析了典型土壤捡石机器分捡装置的工作原理，提出了适合中国山区农田特点的土壤捡石机研究方向和捡石机方案。

To research the water retention performance of lowland heightening farmland protection project in Tingzikou Water Control Pivot, large-scale soil column experiments and one-dimensional saturated-unsaturated flow simulations have been performed.

针对亭子口水利枢纽农田防护工程低地垫高方案的保水性能，在室内大型土柱试验的基础上，建立基于Richards方程的一维饱和-非饱和水流运动数学模型，模拟分析不同防护方案条件下土壤水分的运动过程和保水性能。

Becomes silted up field dam as originally create prevent and cure run-off of soil important engineering measure in loess tableland area people crowd long-term practice, at ameliorates ecological environment and agriculture production condition, constructs stable production high yield basic farm, adjusts village industry structure, high power takes advantage of water resource, consolidate quit plough give back forest, gives back grass harvest, promotes rural economy develop wait for aspect, too exert most important effect.

淤地坝作为黄土高原地区人民群众长期实践中独创的防治水土流失的重要工程措施，在改善生态环境及农业生产条件、建设稳产高产基本农田、调整农村产业结构、高效利用水资源、巩固退耕还林、还草成果、促进农村经济发展等方面，也发挥着极其重要的作用。

The last thing these farmers are prepared to do right now is to re-seed these fields and plow them and get them back into shape and plant the rice that needs to be planted within the three to four weeks, or we really risk seeing no harvest at all for the next year.

他说："农民现在根本没有心思去重新播种稻谷，修整农田、在今后三、四个星期里播种稻谷，但是要不这样的话，那么明年一年，就有可能得不到任何收成，那就太危险了。"

I am the farmer./I plow the dirt.

我是农夫。/我在耕作农田。

The effects of PVC subdrainage on the mineral nutrient uptake,dry matter accumulation as well as distribution,yield and quality of winter wheat in different ecological polder areas of Nanjing are discussed.

着重探讨了南方不同生态类型圩区农田埋设塑料暗管对小麦地上部分矿质营养吸收、干物质累积和分配、产量及品质的影响。

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