沼渣对盐碱地饲草种植的影响  

Effects of Forage Grass Planting with Biogas Residue in Saline Alkali Soil

作　　者：刘杰淋[1] 王建丽[1] 朱瑞芬[1] 申忠宝[1] 韩微波[1] 孔晓蕾[1] 康欣彤[1] 张强[1] LIU Jie-lin;WANG Jian-li;ZHU Rui-fen;SHEN Zhong-bao;HAN Wei-bo;KONG Xiao-lei;KANG xin-tong;ZHANG Qiang(Pratacultural Science Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China)

机构地区：[1]黑龙江省农业科学院草业研究所,黑龙江哈尔滨150086

出　　处：《黑龙江农业科学》2021年第6期116-118,124,共4页Heilongjiang Agricultural Sciences

基　　金：中央财政林业科技推广示范项目(黑[2020]TG07号);黑龙江省农业科学院科研课题(2020JCQN002,2020FJZX025,2020YYYF008)。

摘　　要：为促进沼渣资源化利用,本试验采用田间小区设计,浅旋使沼渣与土壤充分融合,种植大麦和燕麦,在孕穗期和成熟期测定其地上生物量及地下性状。结果表明:3个品种在株高、地上生物量上差异显著,其中龙啤麦3号孕穗期株高极显著高于白燕6号和贝勒,成熟期龙啤麦3号和贝勒株高极显著高于白燕6号;3个品种生物量差异极显著;3个品种的8个根部性状指标进行分析中,在孕穗期除根冠比和根体积3个品种差异不显著外,其他根部性状在品种间均有显著差异(P<0.05),白燕6号根长总和、根表面积和比根长均显著高于贝勒和龙啤麦3号,龙啤麦3号根干重和冠层干重均显著高于另外两个品种,贝勒仅根直径显著高于另外两个品种;在成熟期3个品种的8个根部性状均存在显著差异(P<0.05);建植后的白燕6号、贝勒、龙啤麦3号土壤pH都有降低,成熟期白燕6号土壤pH为8.61,比改良前下降了9.4%。初步得出沼渣改良盐碱地上龙啤麦3号和贝勒生长情况好于白燕6号。In order to promote the resource utilization of biogas residue,field plot design was adopted in this experiment.Shallow rotation was used to make biogas residue fully integrated with soil.Barley and oats were planted.The aboveground biomass and underground root traits were measured at booting and maturity stages.The results showed that there were significant differences in plant height and aboveground biomass among the three cultivars,the plant height of Longpimai No.3 at booting stage was significantly higher than that of Baiyan No.6 and Beller,and the plant height of Longpimai No.3 and Beiller at mature stage was significantly higher than that of Baiyan No.6,there were significant differences in biomass among the three cultivars.In the analysis of 8 root traits of 3 cultivars,except the difference of root-shoot ratio and root volume at booting stage was not significant,there were significant differences in other root traits among cultivars(P<0.05),the total root length,root surface area and specific root length of Baiyan No.6 were significantly higher than those of Beller and Longpimai No.3(P<0.05),the root dry weight and canopy dry weight of Longpimai No.3 were significantly higher than those of the other two cultivars,and only the root diameter of Beller was significantly higher than those of the other two cultivars,and there were significant differences in 8 root traits among the 3 cultivars at maturity(P<0.05).The soil pH of Baiyan No.6,Beller and Longpimai No.3 all decreased after planting,and the soil pH of Baiyan No.6 at maturity was 8.61,which was 9.4%lower than that before improvement.The results showed that the growth of Longpimai No.3 and Beller was better than that of Baiyan No.6.

关 键 词：沼渣 牧草 农艺性状 根系指标 

分 类 号：S156.4[农业科学—土壤学]