So farmers need to grow more grain to feed more animals, and that takes more fertilizer.

于是农民要种植更多的谷物来喂更多的家畜。 于是肥料也用得更多。

youdao

Up to now, more than 100 investors and experts have expressed their will to cooperate with the county with feasible programs to reuse the waste, including producing feed and fertilizer with it.

到目前为止，有100多名投资者和专家表达他们想与榆中县合作的意愿，他们有可行的方案可以重新利用这些废弃物，包括用它们来生产饲料和化肥。

youdao

Other industries: pesticide, feed, fertilizer, pigment, dyestuff and so on.

其它行业的造粒：农药、饲料、化肥、颜料、染料化工等。

youdao

That was back in the 1970s, when the cheesemakers' discarded whey was used as fertilizer and pig feed.

FORBES: Making Whey

That was back in the 1970s, when cheesemakers discarded whey as fertilizer and pig feed--two of its loftier uses.

FORBES: Making Whey

The volume of cottonseed garbage during the 1800s became so problematic that a number of states passed laws to regulate its disposal.16 But while the bolls and leaves were still trash, in the early 1900s the seed began to move up the value chain to be used as fertilizer and animal feed.

NPR: Texas Cotton: 'Farmer Profits at Every Step'