Laboratory of Tropical and Subtropical Agriculture and Ethnobotany, Department of Plant Production, Faculty of Bio-Science Engineering, Ghent University, Coupure links 653, 9000 Gent, Belgium.
Forensic Sci Int. 2012 Jul 10;220(1-3):265-70. doi: 10.1016/j.forsciint.2012.03.013. Epub 2012 Apr 13.
In prosecution, Belgian judiciary currently uses outdated yield figures (28.1g per plant, sold at € 3/g at grower level) for fining illicit indoor cannabis plantations. Using state-of-the-art cultivation techniques, our growth experiments showed that yield is better expressed in g/m(2) cultivated surface area rather than in g per plant, and that yield varies significantly between different cannabis strains. It was found that the lower-bound of the one-sided 95% confidence interval of the yield of an indoor cannabis plantation can be set at 575 g/m(2). Prices and pricing mechanisms were investigated using interviews with respondents selected through snowball sampling. Results reveal that (i) the Belgian cannabis market chain is highly complex; (ii) unit prices are predominantly determined by transaction sizes; but also (iii) a set of product- and socially-related price-fixing mechanisms have an equally important role. At grower level, respondents reported prices for 1 g of dry cannabis buds to range € 3.00-4.25.
在起诉中，比利时司法机关目前使用过时的产量数据（每株 28.1 克，种植者每克售价 3 欧元）对非法室内大麻种植场进行罚款。通过使用最先进的种植技术，我们的生长实验表明，产量更适合用每平方米种植面积的克数（g/m²）来表示，而不是每株植物的克数，而且不同的大麻品种之间产量差异很大。研究发现，室内大麻种植场产量的单侧 95%置信区间下限可以设定为 575 g/m²。使用通过滚雪球抽样选择的受访者进行访谈，研究了价格和定价机制。结果表明：（i）比利时大麻市场链非常复杂；（ii）单位价格主要由交易规模决定；但也（iii）一套与产品和社会相关的定价机制同样具有重要作用。在种植者层面，受访者报告的 1 克干大麻芽的价格在 3.00-4.25 欧元之间。
