生物炭对王草产量及营养品质的影响  

Effects of biochar on yield and nutrient of King grass

作　　者：吴鹏豹[1] 解钰[1] 漆智平[2] 吴蔚东[1] 

机构地区：[1]海南大学热带作物种质资源保护与开发利用教育部重点实验室,海南海口570228 [2]中国热带农业科学院热带作物品种资源研究所,海南儋州571737

出　　处：《草业科学》2012年第9期1428-1434,共7页Pratacultural Science

基　　金：国家自然科学基金(40761024);海南大学"211工程大学建设"专项资金"热带作物遗传育种与生态保育"

摘　　要：以炭土比为0.1%、0.5%、1.0%的生物炭处理海南花岗岩砖红壤,以不施生物炭为对照,研究其对王草(Pennisrtum purpureumxp typhoidevmcv.Reyan No.4)产量及营养品质的影响。结果表明,1)与不添加生物炭相比,生物炭有降低王草产量的趋势,但差异不显著;2)生物炭整体降低了王草营养品质[粗蛋白(CP)、粗脂及(EE)、无氮浸出物(NFE)、粗灰分(Ash)、粗纤维(ADF)],如王草在第3次刈割中,0.1%处理的NFE含量显著低于对照(P<0.05),降幅为13.95%,0.5%、1.0%处理的Ash含量分别显著高于对照22.15%、17.69%,第6次刈割中,0.5%处理的CP、EE分别显著低于对照25.92%、20.25%,而0.1%处理的ADF显著高于对照14.85%;3)通过对王草产量、营养品质进行灰色关联度分析表明,对照的平均关联度最高,其中0.5%处理显著低于对照,说明炭土为0.5%的生物炭处理降低了王草产量和营养品质。Field trails in Hainan Granitic I.aterite with four treatments （biochar/soil= 0, 0. 1%, 0.5%, 1.0%）, were conducted to analyze the effects of biochar on yield and nutrition of King grass. Results showed that biochar treatments had an indistinctive decreasing trend on the yield of King grass. Biochar decreased the whole nutrient qualities of King grass. Compared to the control, the treatment of 0.1% significantly decreased the content of nitrogen-free extract by 13.95% in the third mowing. The treatments of 0.5% and 1.0% significantly increased the content of crude ash by 22.15% and 17.69% in the sixth mowing, respectively. The treatment of 0.1 % significantly increased the content of acid detergent fiber in the sixth mowing. Through the analyzing the data of yield and nutrient by grey relational grade analysis, we found that control had the largest average grey relational grade in all treatments. Specifically, the average grey relational grade of 0.5 % treatment was significantly smaller than control. The results also indicated that the treatment of 0.5 % decreased the yield and nutrient qualities of King Grass.

关 键 词：生物炭 王草 产量 养分 灰色关联度分析 

分 类 号：S816[农业科学—饲料科学] S543.9[农业科学—畜牧学]