农田

This paper describes the collection, installation and use of large undisturbed soil monolith lysimeters to study nutrient leaching under field conditions.

蒸渗仪是用来研究营养元素在农田中的运移的系统，本文系统描述了一种大型蒸渗仪的设计，建造与安装。

Experiments for controlling the soil matric potential of 0～-20 cm soil layer by use of irrigation and drainage have been conducted with lysimeters to study its effect on dry matter accumulation , nutrition and grain yield of winter wheat.

在蒸渗仪上用灌溉和排水控制0～20mm土水势，调节农田土壤水分状况，研究其对小麦干物质累积、矿质营养和籽粒产量等的影响。

Mandrills are feeling the squeeze of spreading agriculture and human settlement -both are shrinking their rain forest homeland .

农田和人类居住区的扩张使山魈们的雨林家园面积不断缩小。

Meanwhile, chlorophyll meter and net photosynthetic rate P(subscript n of rice functional leaves were determined, yield and its components were also determined at maturity stages of rice.

选择江苏省宿迁市2个农田林网典型乡镇为样点，按不同方位林带和不同林缘距离，即1/6H、1/3H、1/2H和2H处设置试验样方，于水稻主要生育期，分别观测水稻群体分层的光照度、温度、相对湿度和CO2浓度，同时测定水稻叶片的SPAD值和净光合速率P(下标 n等，并于水稻成熟期测定产量及产量结构。

Every year, millions of grasshoppers invade farmland in the middle western part of the United States.

每年有数以百万计的蝗虫侵人美国中西部的农田。

In Australia just recently, many crops are under attack by so many locusts that the farmlands are ending up barren wastelands.

最近在澳大利亚，许多庄稼在很多蝗虫的侵袭下使农田变成了贫瘠的荒地。

They are the winged wardens of your farms

它们象卫兵，把你们的农田看守

This paper discusses the varying laws of soil water and nutrients in thecase of different fertilizer conditions thereby to reveal the effects of water and fertilizerand its inter-reaction upon crop nutrient uptakes,moisture utilization and growth anddevelopment.

探讨了旱地农田不同水肥条件下土壤水分和养分的变化规律，揭示了水和肥及其相互作用对作物养分吸收、水分利用以及生长发育的影响。

Although traditionally arid, the provinces of Holguin, Camaguey and Las Tunas hold some of Cuba's finest pasture and farmland and have long been crucial to this communist nation's dairy, beef and agricultural industries.

虽然面临干旱，但Holguin，Camaguey，Las Tunas三省却拥有古巴国内一些最好的牧场和农田，这些土地对于共产主义日常的牛奶供应，牛肉和农业生产都起到了至关重要的作用。

Water flows down the ridges in ditches and is diverted to flood across the land. It is often necessary to have small spreader ditches to redistribute water that naturally accumulates in swales.

水在沟渠内沿渠埂向下流动并被引出来灌溉农田，时常需要临时开挖小分水沟把聚集在洼地里的水再次分配。

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。