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[1]张奇,王海斌,李立,等.田间直播下化感水稻抑草作用及其根际土壤微生物生理特性动态[J].应用与环境生物学报,2018,24(03):478-482.[doi:10.19675/j.cnki.1006-687x.2017.07002]
　ZHANG Qi,WANG Haibin,et al.Field tests to study the dynamics of weed inhibition of allelopathic rice and microbial physiological traits of rice rhizospheric soils[J].Chinese Journal of Applied & Environmental Biology,2018,24(03):478-482.[doi:10.19675/j.cnki.1006-687x.2017.07002]
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田间直播下化感水稻抑草作用及其根际土壤微生物生理特性动态()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
24卷
期数:
2018年03期
页码:
478-482
栏目:
研究论文
出版日期:
2018-06-30

文章信息/Info

Title:
Field tests to study the dynamics of weed inhibition of allelopathic rice and microbial physiological traits of rice rhizospheric soils
作者:
张奇; 王海斌; 李立; 陈尧; 李家玉; 方长旬; 何海斌
1福建农林大学生命科学学院，福建省农业生态过程与安全监控重点实验室 福州 350002 2作物生态与分子生理学福建省高校重点实验室（福建农林大学） 福州 350002 3龙岩学院生命科学学院 龙岩 364012
Author(s):
ZHANG Qi1;  2;  WANG Haibin1;  3;  LI Li1;  CHEN Yao1;  LI Jiayu1;  2;  FANG Changxun1;  2 & HE Haibin1;  2**
1 Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China 2 Fujian Province University Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fuzhou 350002, China 3 College of Life Sciences, Longyan University, Longyan 364012, China
关键词:
化感水稻; 化感作用; 根际土壤; 微生物生理特性; 土壤酶活性
Keywords:
allelopathic rice;  allelopathy;  rhizospheric soil;  microbial physiological trait;  soil enzyme activity
分类号:
S154.3
DOI:
10.19675/j.cnki.1006-687x.2017.07002
摘要:
在人工除草与不除草的田间种植模式下，研究化感水稻PI312777和非化感水稻Lemont苗期对田间杂草的抑制作用、根际土壤的化感潜力以及根际土壤微生物生理特性动态. 结果显示，PI312777的田间抑草率在7叶期达85.82%. 土壤-琼脂三明治法实验表明，5叶期的PI312777根际土壤对稗草干重抑制率显著高于3叶期，不除草处理下5叶期比3叶期增加了20.16%. 在相同叶期下，PI312777的根际土壤微生物生物量碳及呼吸强度、细菌数量和土壤酶（脲酶、蛋白酶和蔗糖酶）活性均远高于Lemont，且不除草处理下显著高于除草处理. PI312777根际土壤抑草率和土壤微生物生理指标均表现为3叶期到5叶期之间的增幅最大. 不除草处理下，化感水稻PI312777根际土壤微生物生物量碳、呼吸强度、细菌数量、脲酶活性、蛋白酶活性和蔗糖酶活性，5叶期比3叶期分别增加了53.11%、51.56%、38.97%、44.83%、60.00% 和41.92%. 本研究结果表明水稻化感作用与根际土壤微生物活动关系紧密，水稻化感物质引起土壤微生物变化，水稻化感作用是一个植物－土壤之间的相互作用过程. （图1 表4 参39）
Abstract:
The weed inhibition of allelopathic rice PI312777 and nonallelopathic rice Lemont, allelopathic potential of rice rhizospheric soils, as well as the microbial physiological traits of rice rhizospheric soils, were studied by field tests after weed-removing and weed treatments. The results showed that the inhibitory rate of PI312777 at the 7-leaf stage on paddy weeds was 85.82%. Results of the Soil-Agar Sandwich method revealed that the allelopathic potential of PI312777 rhizospheric soils on the inhibitory rate of plant dry weight of barnyard grass was significantly higher at the 5-leaf stage than that at the 3-leaf stage, and increased by 20.16% from the 3-leaf stage to the 5-leaf stage after weed treatment. When at the same leaf stage, the soil microbe biomass carbon and soil respiration, the number of soil bacteria, and activity of soil enzymes (urease, protease, and sucrase) were significantly higher in PI312777 rhizospheric soils than in Lemont rhizospheric soils; they were also higher after the weed-removing treatment than after weed treatment. The largest increase of soil allelopathic potentials and soil microbial physiological indexes in PI312777 rhizospheric soils appeared from the 3-leaf stage to the 5-leaf stage. In case of weed treatment, the allelopathic potential of PI312777 rhizospheric soils on the soil microbe biomass carbon, soil respiration, the number of soil bacteria, activity of urease, activity of protease, and activity of sucrase increased by 53.11%, 51.56%, 38.97%, 44.83%, 60.00%, and 41.92%, respectively, from the 3-leaf stage to the 5-leaf stage. These results indicated that rice allelopathy had a close relationship with the activity of rhizospheric soils. Rice allelochemicals lead to the change of soil microbes; rice allelopathy is a process based on plant-soil interaction.

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更新日期/Last Update: 2018-06-30