Abstract: The effects of rainfall and feed ramie planting on water loss and biomass of sloping farmland in 2018 were studied. The results showed that ramie grew from April to October, with more water loss in plum rain season and less water loss in autumn drought. Ramie was better than maize in reducing water loss. The rainfall of 40.0 mm was the starting point of water loss, and 62.3 mm was the out-of-control point of water loss. When the coverage reaches 90%, the amount of water loss could be reduced, and when the coverage was below 60%, the amount of water loss increased with the increasing of rainfall. The growth rate and daily weight gain of ramie were consistent with the average daily rainfall. Fresh grass for ramie was heavier than corn.

Key words: rainfall, water loss, feed ramie, biological yield, sloping farmland