Backpack type. The main features of the brush cutter are flexibility and handiness. The advantages are small volume, light weight, operable by one person, easy to control, not affected by terrain, and no possibility of subsidence. The disadvantages are that, on the one hand, working efficiency is low, the amount of reed harvested per person per day is 0.3-0.5 t, and harvesting cost is relatively high; on the other hand, reeds cut cannot be laid orderly, which brings inconvenience to subsequent bundling and stacking. Walking type Derived from small rice and wheat cutting and placing machine, this machine can harvest reed, rice straw and other crops. Its working efficiency is 0.17-0.33 hm 2 /h, higher than that of a backpack harvester. Fuel consumption is about 0.8-1.5 l/h.