7 sentences

1. 把这条河闸住，引水灌溉农田。

   bǎ zhè tiáo hé zhá zhù, yǐn​shuǐ guàn​gài nóng​tián.

   Dam up the river to divert water for field irrigation.

   Source: Dong Chinese Dictionary

2. 农民们正在清理田间的灌溉渠道。

   nóng​mín men zhèng​zài qīng​lǐ tián jiān de guàn​gài qú​dào.

   Farmers are clearing the irrigation channels in the fields.

   Source: Dong Chinese Dictionary

3. 田边有一条渠，引水灌溉十分方便。

   tián biān yǒu yī tiáo qú, yǐn​shuǐ guàn​gài shí​fēn fāng​biàn.

   There is a ditch by the field, making irrigation very convenient.

   Source: Dong Chinese Dictionary

4. 农民们正在利用河水灌溉干旱的农田。

   nóng​mín men zhèng​zài lì​yòng hé​shuǐ guàn​gài gān​hàn de nóng​tián.

   Farmers are using river water to irrigate the parched farmland.

   Source: Dong Chinese Dictionary

5. 这项水利工程改善了该地区的灌溉系统。

   zhè xiàng shuǐ​lì​gōng​chéng gǎi​shàn le gāi dì​qū de guàn​gài xì​tǒng.

   This water conservancy project has improved the irrigation system in the region.

   Source: Dong Chinese Dictionary

6. 播种之前，农民会先把土地平整一遍，方便后期灌溉。

   bō​zhǒng zhī​qián, nóng​mín huì xiān bǎ tǔ​dì píng​zhěng yī biàn, fāng​biàn hòu​qī guàn​gài.

   Before sowing, farmers level the land first to make subsequent irrigation easier.

   Source: Dong Chinese Dictionary

7. 那位总监在任期间，致力于改善当地的农田灌溉系统。

   nà wèi zǒng​jiān zài​rèn qī​jiān, zhì​lì​yú gǎi​shàn dāng​dì de nóng​tián guàn​gài xì​tǒng.

   During his tenure, the director was committed to improving the local farmland irrigation system.

   Source: Dong Chinese Dictionary