The land is watered by these rivers.

这片土地受这些河流。

The Yangtse River irrigates vast stretches of farmland along its course.

江着两岸的大片农。

They have built canals to irrigate the desert.

他们建造成水渠以沙漠。

The fields are irrigated so that the crops can grow.

地了，庄稼便能生。

Clear water gushed into the irrigational channel.

的水涌进了渠道。

Generally, the FD treatment has decreased the densities of natural enemies and saprophagous insects .

覆膜旱作天敌及腐食者密度低于。

The farmer dug several trenches to irrigate the rice fields.

这个农民挖了好几条沟以稻。

The set of opinion was toward building a new irrigation canal.

大家的意见倾向于修建一条新渠。

There the irrigation canal links up with the reservoir.

这条渠在那里与水库连接起来。

New add combinational revolving support ridger, make irrigating more saving water, convenient.

五、新增组合旋转扶垄器，更加节水、方便。

The government authorized an irrigation project.

政府批准了一项工程。

Irrigation is important for farming.

对农业是非常重要的。

Furthermore, N and P fertilizer application rate could be decreased accordingly to optimize fertilizer management when contributions from eutrophied irrigation water were taken into consideration.

在利用当地富营养化河水进行稻土壤时可适量减少肥料施用量、优化氮磷肥料管理。

Overpumping groundwater for drinking water and irrigation has caused water levels to decline by tens of metres in many regions, forcing people to use low-quality water for drinking.

过度抽取地下水做为饮用水和用来在许多地区已经水位下降了几十米，迫人们用质量较差的水来做为饮水。

The paper analyzes the soil water dynamics and water requirement law of alfalfa,feed maize and ensile maize under 3 kinds of water-saving irrigation conditions through experimental study on the crops.

对节水条件下的紫花苜蓿、饲料玉米和青贮玉米需水量进行了试验研究,分析了不同水平下3种饲草料作物的土壤水动态和需水规律。