论文部分内容阅读
襄樊市是湖北省食用菌重点产区之一.随着生产的发展,栽培种类增加了,面积扩大了,产量提高了,但耳林资源却急剧下降了.当前已呈现出资源危机,制约着生产的进一步发展.从1987年调查数据中可以看出,全市耳林面积226万亩,仅占有林面积(1303万亩)的17.4%,比解放初期的500多万亩下降55%左右;活立木蓄积量453万棚,只占有林总蓄积量的4.5%,比解放初期的5000万棚下降90%以上.究其
Xiangfan City is one of the key producing areas of edible fungi in Hubei Province.With the development of production, the cultivated species have increased, the area has been expanded, and the output has been increased, but the resources of the eucalyptus forest have dropped sharply.At present, there have been resource crises and constraints As can be seen from the survey data in 1987, the total acreage in the city is 2.26 million mu, accounting for only 17.4% of the total forest area (130.3 million mu), down by 55% from the more than 5 million mu in the early liberation period. 4.53 million cubic meters of storage shed, accounting for only 4.5% of the total volume of forest, shed more than 90% more than 50 million shed in the early liberation.