1. Introduction Sanjiang Plain is situated in northeast part of Heilongjiang Province in China. The area is 108,900km^2. The mountain and hill make up 39% and the plain makes up 61% in the whole plain area. The marshl...1. Introduction Sanjiang Plain is situated in northeast part of Heilongjiang Province in China. The area is 108,900km^2. The mountain and hill make up 39% and the plain makes up 61% in the whole plain area. The marshland is a special landscape of the plain. After the People’s Republic founding, the wasteland has been reclaimed 27,440,000ha. through three times of large scale reclaimation. The farmland has been enlarged three times in 35 years, in which the exploitation speed of state farm system is much faster than county system. Its farmland has been increased from original 7,267ha. to current 1,644,700ha.. The farmland increasing brings about raising of grain production to a great extent.展开更多
文摘1. Introduction Sanjiang Plain is situated in northeast part of Heilongjiang Province in China. The area is 108,900km^2. The mountain and hill make up 39% and the plain makes up 61% in the whole plain area. The marshland is a special landscape of the plain. After the People’s Republic founding, the wasteland has been reclaimed 27,440,000ha. through three times of large scale reclaimation. The farmland has been enlarged three times in 35 years, in which the exploitation speed of state farm system is much faster than county system. Its farmland has been increased from original 7,267ha. to current 1,644,700ha.. The farmland increasing brings about raising of grain production to a great extent.
