阿坝高原野生珠芽蓼果实能源价值评价  

Evaluation of fruit energy value of Polygonum viviparum in the Aba Plateau

作　　者：匡瑜[1] 孙飞达[1] 干友民[1] 冯国英[1] 蔡卓[1] 马超[1] 

机构地区：[1]四川农业大学草业科学系,四川雅安625014

出　　处：《草业学报》2011年第5期278-283,共6页Acta Prataculturae Sinica

基　　金：国家科技基础性工作专题重点项目(2008FY110400-2-4)资助

摘　　要：对阿坝州红原县、若尔盖县及松潘县珠芽蓼果实产量、总糖及能值三方面的能源价值评价结果表明,1)7个采样地珠芽蓼果实产量和总糖含量总体差异显著(P<0.001),3号采样地果实产量极显著高于其他采样地(鲜重117.222g/m2、干重46.226g/m2),总糖含量最高为5号采样地(54.16%),平均总糖含量49.73%;2号、3号和7号采样地珠芽蓼果实的能值大小没有呈现一定的规律性,平均能值15.85MJ/kg。2)经相关性分析,果实干重与海拔呈显著负相关(P<0.05),与珠芽蓼盖度和地上现存量呈显著正相关(P<0.05),而各因素对果实总糖含量的影响不显著(P>0.05)。3)在不统计不同产量草地面积的情况下,果实年产量在红原县地区达17 387.81～105 674.34t(鲜重),年产糖分8 646.96～52 551.85t,在若尔盖地区达15 172.04～92 208.01t(鲜重),年产糖分7 545.06～45 855.04t,有望成为具有潜力的野生碳水化合物类能源植物。Fruit yield,total sugar,and calorific value were chosen to study energy potential of Polygonum viviparum,in Hongyuan,Ruoergai and Songpan.The results showed that,1） Fruit yield and total sugar,differed significantly in 7 plots（P0.001）,with levels in plot 3 significantly higher than in the other samples（fresh weight 117.222 g/m2,dry weight 46.226 g/m2）.The highest total sugar was in plot 5（54.16%）,and the average was 49.73%.The calorific value of fruits in plots 2,3 and 7 did not show regularity： the average was 15.85 MJ/kg.2） Correlation analysis showed that fruit dry weight had a significant negative correlation with altitude,but a significant（P0.05） positive correlation with coverage of P.viviparum and aboveground litter storage,while the impact of various factors on total sugar was not significant.3） Statistics for the grassland areas showed the fruit annual yield in Hongyuan is from 17 387.81 to 105 674.34 t（fresh weight）,in Ruoergai it is from 15 172.04 to 92 208.01 t（fresh weight）.The annual total sugar in Hongyuan is from 8 646.96 to 52 551.85 t,in Ruoergai it is from 7 545.06 to 45 855.04 t,P.viviparum is expected to become a potential wild carbohydrate energy plant.

关 键 词：阿坝高原 珠芽蓼 果实 能源价值 产量 总糖 能值 

分 类 号：S216.2[农业科学—农业机械化工程]