2 sentences

1. 今年的收成增产了二成。

   jīn​nián de shōu chéng zēng​chǎn le èr​chéng.

   This year's harvest increased by twenty percent.

   Source: Dong Chinese Dictionary

2. 通过改良种子，农民们实现了粮食增产。

   tōng​guò gǎi​liáng zhǒng​zi, nóng​mín men shí​xiàn le liáng​shi zēng​chǎn.

   By improving seeds, farmers have achieved an increase in grain production.

   Source: Dong Chinese Dictionary