摘要
以籼型三系杂交稻组合汕优63以及常规籼稻扬稻6号为材料,通过稻草覆盖旱种、地膜覆盖旱种、裸地旱种和常规水种(对照)比较试验,研究了旱种对水稻灌浆期间生理活性的影响。结果表明,旱种稻叶片叶绿素含量、剑叶光合速率以及超氧化物岐化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)活性均低于水种水稻,后期尤为明显;旱种稻丙二醛(MDA)含量高于水种水稻,灌浆中后期旱种稻根系活力下降较快;上述生理指标(MDA除外)水种>覆草旱种>覆膜旱种>裸地旱种。表明与其他旱种方式相比,覆草旱种水稻的群体质量相对较好,后期生理活性较高。对覆草旱种与覆膜旱种及水种在生理活性上的差异进行了讨论。
Two rice cuhivars, Shanyou 63 （An indica hybrid rice combination） and Yangdao 6（Indica）, were used to investigate the physiology activity of rice grain filling cultivated with different methods. The results showed that dry-cultivation exhibited higher chlorophyll content, photosynthesis rate, and activities of superoxide dismutase （SOD）, peroxidase （POD） and catalase（CAT） during grain filling, especially at the late filling stage when compared with MC. MDA content in leaves under dry-cultivation was higher than that under MC. The root activity of dry-cultivation rice decreased rapidly at late grain filling stage. Except MDA, above physiological traits showed the order of MC 〉 DCMS 〉 DCMF 〉 BC, The results suggest that grain yield was higher and rice quality better under DCMS than those under other two dry-cultivation patterns. Reasons for the differences in physiology activity of rice grain filling among DCMS, DCMF and MC were discussed in the paper.
出处
《华北农学报》
CSCD
北大核心
2008年第6期130-134,共5页
Acta Agriculturae Boreali-Sinica
基金
国家自然科学基金项目(30671225
30771274)
国家科技攻关项目(2006BAD02A13-3-2)
引进国际先进农业科学技术计划(“948”计划)项目(2006-G60)
关键词
水稻
覆草旱种
覆膜旱种
生理活性
Rice
Dry-cultivation mulched with straw
Dry-cultivation mulched with film
Physiology activity
