摘要
对50年生的油茶成龄低产林的研究表明,油茶成龄林群体鲜果产量的差异较大,这种产量差异与林分密度几乎无关(r=0.4971),但与单株平均产量有一定的关系(r=0.765 1),种群的鲜果产量结构总体表现为:单株在2 kg以下的低产植株占80%左右、在2~5 kg的中产植株占10%~15%、在5 kg以上的高产植株占6%左右,呈现明显的负指数分布(Y=23.49X-1.587 8),并且构成产量的植株基本上是受品种的影响,因此导致油茶成龄林低产的主要原因是由于低产品种多、中高产品种少,由此提出除劣补优的良种定位置换改造对策。
Studies on 50-year-old low-yield forest of Camellia oleifera showed, fresh fruit yield had great difference among the mature forests of C. oleifera. It was not correlated significantly with stand density (r = 0.4971), but it was correlated significantly with average yield per individual (r = 0.7651). The individual whose yield was tess than 2 kg accounts for about 80%. The middle-yield individual whose yield was from 2 kg to 5 kg, accounts for 10% - 15%, and high--yield individual whose yield was more than 5 kg, accounts for about 6%. Individual yield displayed Negative exponential distribution ( Y= 23.49X- 1.587 8 ) .This paper proposed transformation countermeasure of low-yield mature forest of C. oleifera.
出处
《浙江林业科技》
北大核心
2011年第6期35-38,共4页
Journal of Zhejiang Forestry Science and Technology
基金
山地油茶高产栽培技术集成示范(2009BADB1B05-02)
浙江省油茶丰产栽培集成技术推广示范(〔2009〕TK001号)
关键词
油茶
产量
群体
种群
定位改造
Camellia oleifera
yield
population
localization improvement