Zhòng / zhí / lǜ / féi / kě / yǐ / jiǎn / shǎo / huà / féi / de / shǐ / yòng / gǎi / shàn / nóng / tián / huán / jìng种植绿肥可以减少化肥的使用,改善农田环境。Growing green manure can reduce the use of chemical fertilizer and improve farmland conditions.