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一、试验区基本情况 试验区选择在罗田县石桥铺乡文斗河村一块已开垦种植的陡坡地上,面积2727km~2,平均坡度27°。1980年和1981年开荒种农作物,1981年春栽松苗,冬直播栓皮栎。1982年停耕,当年11月观测幼松平均高19.3cm,栓皮栎幼树高22.2cm,成活率均达70％左右,1984年10月观测两种幼树高均在60cm以上。停耕后杂草丛生,植被达到75～85％;而停耕前4、5、8、9月小麦、芝麻生长旺季覆
First, the basic conditions of the pilot area Test area selection Luotian County Shiqiao Pu Xiang Wen Douhe a reclamation planted steep slopes, an area of 2727km ~ 2, the average gradient of 27 °. In 1980 and 1981, cropland was planted, pine seedlings planted in spring 1981 and cork oak in winter. In 1982, the tillage was stopped. In November of that year, the observed young seedlings were on average 19.3 cm high and the seedlings of cork oak were 22.2 cm high with a survival rate of about 70%. In October 1984, both young saplings were above 60 cm in height. After stopping tillage weeds, vegetation reached 75 to 85%; and stop farming before 4, 5, 8, September wheat, sesame growing season cover