4 sentences

1. 由于旱灾，早造水稻减产了。

   yóu​yú hàn​zāi, zǎo zào shuǐ​dào jiǎn​chǎn le.

   Due to the drought, the yield of the early rice crop has decreased.

   Source: Dong Chinese Dictionary

2. 欧佩克近期宣布了石油减产计划。

   ōu​pèi​kè jìn​qī xuān​bù le shí​yóu jiǎn​chǎn jì​huà.

   OPEC recently announced a plan to cut oil production.

   Source: Dong Chinese Dictionary

3. 由于连年干旱，当地的农作物减产严重。

   yóu​yú lián​nián gān​hàn, dāng​dì de nóng​zuò​wù jiǎn​chǎn yán​zhòng.

   Due to successive years of drought, local crop yields have decreased significantly.

   Source: Dong Chinese Dictionary

4. 受干旱影响，今年该地区的粮食大幅减产。

   shòu gān​hàn yǐng​xiǎng, jīn​nián gāi dì​qū de liáng​shi dà​fú jiǎn​chǎn.

   Affected by the drought, grain production in the region has dropped significantly this year.

   Source: Dong Chinese Dictionary