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淮北矿务局所属四个平原林场,即濉溪县柳湖林场、灵壁县大山林场、泗县小桂庄林场和固镇县汾洪江林场。土壤多属砂姜黑土,质地粘重,肥力较低。为解决矿区塘材供应不足问题,自1980年以来,营造杨树纯林1,597亩、紫穗槐纯林7,329亩,杨树、紫穗槐混交林1,839亩。为了解混交林树木生长状况、病虫为害及其经济效益情况,我们特对汾洪江林场江南林业队营造的杨树、紫穗槐混交林进行了调查。 一、林地概况 调查林地土壤为砂姜黑土(土层60—80厘米以下有大小不等的碳酸钙结核砂姜),土壤肥力均匀。1980年春季造林,面积70亩。杨树造林初植密度17株/亩,株行距4×10米,大行距内紫穗槐株行距1×1.5米。
Huaibei Mining Bureau belongs to four plain farms, namely, Liuhe Forest Farm in Suixi County, Dashan Forest Farm in Ling County, Xiao Guizhuang Forest Farm in Si County and Fenhongjiang Forest Farm in Guzhen County. Soil mostly belong to ginger black soil, sticky texture, low fertility. In order to solve the problem of inadequate supply of pond material in mining areas, 1,597 mu of poplar pure forest, 7,329 mu of pure Amorpha fruticosa and 1,839 mu of mixed forest of poplar and Amorpha fruticosa have been established since 1980. In order to understand the growth of mixed trees, pests and diseases and their economic benefits, we conducted a survey on mixed poplar and Amorpha fruticosa mixed forest constructed by Jiangnan forestry team in Fenhongjiang Forest Farm. First, the woodland survey Woodland soil for the soil black ginger (soil below 60-80 cm in size ranging from calcium carbonate tuberculosis ginger), soil fertility. Afforestation in the spring of 1980, an area of 70 acres. Planting density of poplar afforestation 17 / mu, plant spacing 4 × 10 m, spacing between Amorpha plant spacing 1 × 1.5 m.