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我省黄河故道沙区杨树栽培面积10.6万亩,蓄积12.7万立方米。针对这里地瘠、沙重、低产等问题,近几年我们对杨树速生丰产技术开展了以品种、水肥、混交和密度为中心的试验研究,研究结果如下。试验区概况豫东、北黄河故道位于东经113°39′～115°40′,北纬32°44′～35°30′,年平均温度13.8℃至.15℃,温暖指数121.9至125.7℃。寒冷指数为-15℃至-7.8℃,年雨量543.8～769.2毫米。日照时数
Yellow River in our province sand area poplar cultivation area of 106000 mu, accumulation of 127000 cubic meters. In view of the problems such as infertility, sand mass and low yield in this area, in recent years, we carried out experimental research centering on varieties, water and fertilizer, mixing and density for fast-growing and high-yield poplar techniques. The results are as follows. The experimental area is located in the eastern longitude of 113 ° 39 ’~ 115 ° 40’ east longitude, north latitude 32 ° 44 ’~ 35 ° 30’, the annual average temperature of 13.8 ℃ to .15 ℃, the warm index of 121.9 to 125.7 ℃. The cold index is -15 ℃ to -7.8 ℃, the annual rainfall of 543.8 ~ 769.2 mm. Sunshine hours