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1987年至1994年,在拜泉县的薪炭林场和国营苗圃进行了薪炭林灌木柳2年与3年短期轮伐对比试验。现将试验研究结果初报如下。 1.试验研究方法 采取小区域试验与面上调查,单因子与多因素综合分析相结合的方法,在薪炭林场设置试验地0.67亩,苗圃设置试验地2亩,开展研究工作。薪炭林灌木柳品种主要是松江柳、短序松江柳、蒙古柳。试验地的立地条件、林龄、灌木柳丛品种、技术措施、经营方式薪炭林场的试验地,分别2和3年生轮伐期各划分4个小区,按小区进行生长量和地径实
From 1987 to 1994, the fuelwood shrubs and shrubs were compared for two years with three years of short-term rotations in firewood farms and state nurseries in Baiquan County. Now the experimental results are as follows. 1. Experimental Research Methods Taking a small area test and an on-the-surface survey, a combination of single factor and multi-factor comprehensive analysis, 0.67 mu experimental sites were set in the fuelwood farms and 2 mu were set up in nurseries to carry out research work. Firewood bush shrub varieties are mainly Songjiang Liu, short-order Songjiang Liu, Mongolia willow. Site conditions, age, shrubs and willow varieties, technical measures, management practices of the fuelwood farm test sites, respectively, 2 and 3 years of annual rotation divided into four districts, according to the growth of the district and the diameter of the ground truth