我省素有“七山、一水、二分田”之称,且多为黄红壤及红壤发育的水稻田,由于森林覆盖率低,交通不便,这些地方存在“三缺”一有机肥、饲料、燃料,因而造成“三低”—土壤肥力低、产量低、收入低。要想改变面貌,必须开辟有机质肥源和饲料来源,充分利用山区的广阔空间(单季稻和浸冬田多),充裕的时间(复种指数低),劳力多(人多耕地少)来放养耐低温的高产细绿萍,以逐步解决“三缺”和“三低”问题。近两年山区养用萍面积已达40多万亩,取得了明显 The province is known as “seven mountains, one water, two sub-fields,” said, and mostly yellow paddy soil and red soil development of paddy fields, due to low forest coverage, traffic inconvenience, these places there are “three shortages” of an organic fertilizer, feed , Resulting in “three lows” - low soil fertility, low yields and low incomes. To change the face, we must open up sources of organic fertilizers and feedstuffs, make full use of the vast areas of mountainous areas (single cropping paddy and soaked winter paddy fields), abundant time (low multiplying index) and more labor (less cultivated land) Of the fine production of fine green Ping, in order to gradually solve the “three shortages” and “three low” issue. The past two years, mountain area has reached more than 40 acres of Ping area, made obvious