摘要
用差时播种共培法的改进方法对 1 0 5份水稻、6份巴西陆稻进行了化感作用抗稗草评价。结果表明长匡 7号、P4、Kogyoku、 IR2 731 6、 Milyang 54和巴西陆稻 AJ0 35等材料对无芒稗有较好的化感作用。盆栽研究表明 ,谷梅 2号、中 1 56对无芒稗的抑制作用显著大于对照 ,而化感作用材料 TN1对无芒稗的抑制作用与无化感作用材料秀水 63无显著差异。中 1 56的抑制作用强与其株高有关 ,而谷梅 2号对无芒稗的抑制作用强主要在于其本身的化感作用。随着水稻密度增加 ,无芒稗受抑程度加剧 ,化感作用水稻对稗草根部的抑制似乎要比无化感作用水稻强。 TN1对无芒稗的化感作用不明显 。
One hundred and five rice germplasms from China and other countries, and six Brazilian upland rice materials were identified for allelopathy to barnyardgrass Echinochloa crus galli (L.) Beauv.] by using the relay seeding technique with slight modification. Results showed that Zhangkuang 7, P 4, Kogyoku, IR27316, Milyang 54 and Brazilian upland rice AJ035 had strong allelopathic effect to barnyardgrass. Pot experiment showed that Gumei 2 and Zhong 156 had greater inhibition effect to barnyardgrass compared with CK, on the contrary, allelopathic material TN1 had no significant inhibition effect to barnyardgrass compared to non allelopathic material Xiushui 63. Zhong 156, which had stronger inhibition effect, was related to its plant height, meanwhile, Gumei 2 with stronger inhibition effect to barnyardgrass was due to its own allelopathic trait. The degree of inhibition of barnyardgrass became greater as the increase of rice density. It seemed that the root growth inhibition of barnyardgrass was greater in allelopathic rice than that in non allelopathic rice. TN1 had little allelopathic effect to barnyardgrass collected in the field of China National Rice Research Institute(CNRRI), which might be due to its different inhibition effect to different ecological barnyardgrass. by using the relay seeding technique with slight modification. Results showed that Zhangkuang 7, P 4, Kogyoku, IR27316, Milyang 54 and Brazilian upland rice AJ035 had strong allelopathic effect to barnyardgrass. Pot experiment showed that Gumei 2 and Zhong 156 had greater inhibition effect to barnyardgrass compared with CK, on the contrary, allelopathic material TN1 had no significant inhibition effect to barnyardgrass compared to non allelopathic material Xiushui 63. Zhong 156, which had stronger inhibition effect, was related to its plant height, meanwhile, Gumei 2 with stronger inhibition effect to barnyardgrass was due to its own allelopathic trait. The degree of inhibition of barnyardgrass became greater as the increase of rice density. It seemed that the root growth inhibition of barnyardgrass was greater in allelopathic rice than that in non allelopathic rice. TN1 had little allelopathic effect to barnyardgrass collected in the field of China National Rice Research Institute(CNRRI), which might be due to its different inhibition effect to different ecological barnyardgrass.
出处
《中国水稻科学》
CAS
CSCD
北大核心
2003年第1期67-72,共6页
Chinese Journal of Rice Science
基金
国家自然科学基金资助项目 (30 1 70 62 0 )
