水稻对稗草的化感作用研究

摘要/Abstract

摘要： 用差时播种共培法的改进方法对138份稻种资源进行了化感作用抑稗评价.结果表明,江西的青困二号、江苏的吓一跳、安徽的鸡早籼、江西的赣早籼37、陕西的商糯1号、IRRI的IR6865-2-3-2、韩国的水原92对稗草表现出较强的化感抑制作用.盆栽研究表明,谷梅2号、中156对稗草的抑制作用显著大于对照,而化感作用材料TN1对稗草的抑制作用与无化感作用材料秀水63无显著差异. 中156的抑制作用强与其株高与秀水63有显著差异有关,而谷梅2号对稗草的抑制作用强主要在于其本身具有化感作用特性.

关键词: 稻种资源, 稗草, 化感作用, 硝化作用, 微生物, 反硝化作用, CO₂浓度升高, 氮循环

Abstract: 138 rice (Oryza sativa) germplasms were identified to study the allelopathy to barnyardgrass (Echinochloa crus galli),using the relay seeding technique .The results showed that Qingkun2 from Jiangxi Province, Xiayitiao from Jiangsu Province,Jizaoxian from Anhui Province, Ganzaoxian37 from Jiangxi Province, Shangnuo 1, IR68465-2-3-2 from IRRI,and Shuiyuan2 from Korea had a strongly excellent inhibition effect on barnyardgrass. Results from pot culture showed that Gumei 2 and Zhong156 had a greater inhibitory effect than control, and allelopathic material TN1 had no significantly inhibition effect,compared to non allelopathic material Xiushui 63. The effect of Zhong156 was related to its plant height, and significant different from that of Xiushui 63.Gumei 2 had a stronger inhibition effect on barnyardgrass,due to its own allelopathic trait.

Key words: Rice germplasm, Brnyardgrass, Allelopathy , denitrification, nitrogen cycle., elevated atmospheric CO₂, nitrification, microorganisms

中图分类号:

Q948.12

徐正浩, 余柳青, 赵明. 水稻对稗草的化感作用研究[J]. 应用生态学报, 2003, (5): 737-740.

XU Zhenghao, YU Liuqing, ZHAO Ming. Rice allelopathy to barnyardgrass[J]. Chinese Journal of Applied Ecology, 2003, (5): 737-740.

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