【摘要】 [目的]为免耕强化栽培在水稻种植中的应用提供参考。[方法]以两优培九为供试品种,以免耕抛秧栽培为对照,采用随机区组设计,通过田间试验研究了免耕强化栽培条件下水稻的生长状况和产量。[结果]免耕水稻强化栽培体系(SRI)和对照在分蘖高峰期的平均分蘖数分别为36.5和26.7个/株,相差36.7%;在成熟期的有效穗数分别为14.6和11.4个/株,相差28.07%。在分蘖期、抽穗期和成熟期,免耕SRI的根系活力分别比对照高17.43%、13.63%和22.41%,叶片脯氨酸含量分别比对照高21.37%、32.44%和9.92%,叶片丙二醛含量分别比对照高10.42%、13.62%和9.47%。与免耕抛秧栽培相比,免耕SRI的有效穗数减少了8.93%,穗粒数增加了11.32%。[结论]免耕强化栽培是一种高产高效栽培模式,值得推广和应用。更多还原

【Abstract】 [Objective] The study aimed to provide reference for the application of no-tillage and intensified cultivation in rice planting.[Method] With Liangyoupeijiu as tested cultivars,no-tillage rice transplanting cultivation as CK,the growth status and yield of rice under the condition of no-tillage intensified cultivation were studied through the field experiments with randomized block design.[Result] The average tiller numbers of no-tillage system of rice intensification (SRI) and CK in peak tillering period were 36.5 and 26.7 tillers/plant resp.and their difference was 36.7%;their available ear numbers in maturation period were 14.6 and 11.4 ears/plant resp.and their difference was 28.07%.In tillering,heading and maturation periods,compared with CK,the root activity of no-tillage SRI was enhanced by 17.43%,13.63 % and 22.41% resp.,its proline content in leaf was enhanced by 21.37%,32.44% and 9.92% resp.and its malonaldehyde content in leaf was enhanced by 10.42%,13.62% and 9.47% resp.Compared with no-tillage rice transplanting cultivation,the available ear number of no-tillage SRI was reduced by 8.93% and its grain number per ear was increased by 11.32%.[Conclusion] No-tillage intensified cultivation was a high-yield and high efficient cultivation mode and it was worth popularizing and applying.更多还原