论文部分内容阅读
一、水土流失现状及其危害 四川省南充地区水土流失问题是较严重的,给工农业生产和人民生活带来了很大危害。南充县66.13万亩旱地中,有轻度沟蚀3.35万亩,占旱地面积的5.7％;中度沟蚀46.02万亩,占旱地面积的69.6％;强度沟蚀16.33万亩,占旱地面积的24.7％。据1978年在飞龙公社盐溪河洪水期间的测定,每立
I. Status and harm of soil and water loss Soil and water loss in Nanchong, Sichuan Province is a serious problem that has brought great harm to industrial and agricultural production and people’s livelihood. Nanchong County, 66.13 million mu of dry land, mild erosion of 33500 acres, accounting for 5.7% of the dry land area; moderate ditch erosion of 46.02 acres, accounting for 69.6% of the dry land area; strength ditch erosion 163.3 thousand mu, accounting for dry land area 24.7%. According to the determination of the Salt Creek River in the Flying Dragon commune in 1978, every li