摘要
为科学利用绿肥油菜对土壤的生物熏蒸作用,通过田间实验研究不同含硫量绿肥油菜对枸杞地土壤线虫群落的影响,调查土壤线虫的数量和种类。处理包括行间种植高硫油菜(Hg)、低硫油菜(Lg)与常规清耕管理对照(CK)。结果显示:与CK相比,5月15日种植油菜一个半月,Hg和Lg处理分别使枸杞地土壤线虫数量显著升高103.45%和53.64%;6月30日种植油菜三个月,Hg和Lg处理分别使土壤线虫数量显著升高72.90%和51.34%;但在8月15日翻压油菜一个半月,Hg和Lg处理分别使土壤线虫数量显著降低58.35%和54.20%;9月30日翻压油菜三个月,Hg和Lg处理分别使土壤线虫数量升高5.10%和0.14%,但未达显著差异。同时,在线虫种类上,Hg和Lg处理使食细菌线虫个体和属的数量较CK显著升高,而使植食性线虫个体和属的数量较CK显著降低,特别是植食性线虫胞囊属。与CK相比,Hg和Lg处理线虫通路指数(NCR)在前3次采样时显著升高,而在第4次采样时显著降低;Hg和Lg处理使线虫丰富度指数(Rs)、瓦斯乐斯卡指数(WI)、自由生活线虫成熟度指数(MI)显著升高,而使植食性线虫成熟度指数(PPI)显著降低。这些结果表明,绿肥油菜有利于枸杞地土壤线虫数量的增长,同时能够增加食细菌线虫属的数量和相对丰度、降低植食性线虫属的数量和相对丰度,特别是高硫绿肥油菜。
A field experiment was conducted to investigate oilseed rape influences with different sulfur content as green manure on soil nematode community of wolfberry orchard,which was included planting high sulfur content oilseed rape(Hg),low sulfur content oilseed rape(Lg)between wolfberry rows and clean tillage control(CK)3 treat⁃ments.Results showed that,at May 15th,after 1.5 months of planting oilseed rape,compared with CK,soil nema⁃tode numbers of Hg and Lg treatment were significant increased by 103.45%and 53.64%.At June 30,after 3 months of planting oilseed rape,the soil nematode numbers of Hg and Lg treatment were significant increased by 72.90%and 51.34%;but at August 15,after turned oilseed rape for another 1.5 months,the soil nematode numbers of Hg and Lg treatment were significant decreased by 58.35%and 54.20%.At September 30,after turned oilseed rape for another 3 months,the soil nematode numbers of Hg and Lg treatment were increased by 5.10%and 0.14%,respectively.In the present study,soil nematode individuals and genus numbers of bacterivores were significant in⁃creased and of plant-parasites were significant decreased,especially in Heterodera genus of plant-parasites,respec⁃tively.Compared with CK,the nematode channel ratio was significant increased at the first 3 sampling,but was sig⁃nificant decreased at the 4th sampling by Hg and Lg treatment;richness index,the Shannon-Weiner index and the maturity index of free-living nematodes were significant increased and the maturity index of plant parasite index were significant decreased by Hg and Lg treatment,respectively.These results indicated that as green manure oil⁃seed rape is benefit for increasing of nematode number,could increase the genu number and relative abundance of bacterivores,and decrease the genus number and relative abundance of plant-parasites,especially when high sulfur oilseed rape was used.
作者
张树杰
陈灿
罗爱华
王培
赵燕
ZHANG Shu-jie;CHEN Can;LUO Ai-hua;WANG Pei;ZHAO Yan(Ningxia Polytechnic,Ningxia Open University,Ningxia Yinchuan 750002,China)
出处
《中国油料作物学报》
北大核心
2025年第3期768-775,共8页
Chinese Journal of Oil Crop Sciences
基金
宁夏自然科学基金(2022AAC03634)。
关键词
油菜
含硫量
绿肥
生物熏蒸
土壤线虫
食细菌线虫
植食性线虫
oilseed rape
sulfur content
green manure
biofumigation
soil nematodes
bacterivores
plant-parasites
作者简介
张树杰(1972-),男,博士,副研究员,主要从事植物营养与土壤环境研究,E-mail:sjzhang1972@126.com。
