Effects of Different Weeding Frequencies and Methods on the Yield and Quality of Radix bupleuri
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摘要: 本文调查了旺苍县柴胡(Radix bupleuri)试验地的杂草种类,并研究了不同人工除草次数和除草方式对柴胡产量及品质的影响.通过调查发现柴胡试验地共有11科16种杂草,其中阔叶杂草种类占87.5%,禾本科杂草中狗尾草相对多,占比56.89%.不同人工除草次数结果表明,相比不除草对照,1次和2次除草对柴胡根质量无影响,3次除草及完全人工除草后柴胡的根质量有显著性增加.3种除草剂防除方式(精喹禾灵、高效盖草能、精喹禾灵与高效盖草能混用处理)处理后柴胡根质量较低,与农户自防处理存在显著性差异;覆盖黑色地膜处理后柴胡产量最高,平均根质量为3.64 g,与农户自防处理差异不显著.进一步利用高效液相色谱(HPLC)分析发现不同除草次数之间和除草方式之间柴胡皂苷a、d的总量均无显著性差异.研究表明覆盖黑色地膜可以有效提高柴胡产量,并且对其品质无较大影响,可考虑作为今后柴胡生产中主要的杂草绿色防控技术.该研究结果为柴胡实际生产中草害防控提供一定理论依据.Abstract: In a study reported in this paper,weeds species in the experimental field of bupleurum (Radix bupleuri) of Wangcang County were surveyed,and the effects of weeding frequencies and methods on the yield and qualityof bupleurum wereinvestigated.A total of 16 species of weeds belonging to 11 families were recorded,of which broad-leaved weeds accounted for 87.5% of the total,and Setaria viridis (L.) Beauv., a weed grass,had a relative abundance of 56.89%.Compared with the no-weeding control,one or two times of weeding did not affectthe root weight of bupleurum,three times of weeding and complete artificial weedingsignificantly increasedits root weight. The root weight of bupleurum was significantly different from that of local farmers' weeding treatment after the four weeding treatment methods (application of quizalofop-P-ethyl,haloxytop-R-mithyl,mixed application of quizalofop-P-ethyl+haloxytop-R-mithyl and black plastic film mulching). Blackplastic filmmulching gave the highestyield,with an average root weightof 3.64 g.HPLC (high performance liquid chromatography) showed that there was no significant difference in the total amount of saponin A and saponin D between different weeding times and different weeding methods.In conclusion,covering with black mulching can effectively improve the yield of bupleurum,and has no significant effect on its quality,so it is recommended as the main green control technology for weedsin bupleurum production.
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Key words:
- bupleurum (Radix bupleuri) /
- weed survey /
- weeding /
- weeding method /
- saikosaponin .
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