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The purpose of this study is to help build a clear picture of grazing in an agriculture region of China, to find out why farmers buy supplemental feed which is used in winter when their farmland is abandoned and covered by weeds. To meet this goal, I used the case of a village where farmers not only supplied but also bought supplemental feed to see how they used farmland. I discovered the following : The land fragmentation causes them to abandon arable field and borrow farmland from others by their relationship. So they don't have enough farmland to plant feed. And to avoid injury through continuous cropping, they have to use crop rotation. They also have to put some farmland to producing self-supplied food crop. The result of all these factors is that, farmers have to buy the supplemental feed, because they have not enough farmland to plant feed for livestock, even though they have abandoned arable field.
