【摘要】 【目的】探究不同栽培模式对再生稻周年产量和地上部分干物质量的影响。【方法】以甬优4949和晶两优1468为供试品种，设置3种栽培模式：当地生产模式(施氮量150 kg/hm~2、氮肥基追比为7∶3、种植密度为25蔸/m~2)、高产高效模式(施氮量120 kg/hm~2、氮肥基追比为5∶5、种植密度为30蔸/m~2)、再高产高效模式(施氮量150 kg/hm~2、氮肥基追比为4∶6、种植密度为32蔸/m~2、施用生物有机肥2.25 t/hm~2),测定不同栽培模式下再生稻的籽粒产量和干物质量。【结果】再高产高效模式的头季和再生季产量显著高于当地生产模式，两年甬优4949头季产量分别较当地生产模式显著增加了39.1%和40.7%、再生季产量分别较当地生产模式显著增加了60.5%和33.3%。晶两优1468头季产量分别较当地生产模式显著增加了52.5%和52.3%、再生季产量分别较当地生产模式显著增加了82.4%和25.6%。从产量构成来看，头季和再生季产量随有效穗数的提高而升高。从干物质量看，再高产高效模式下再生稻成熟期的干物质积累量最高。【结论】再高产高效模式实现了再生稻增产的目的，为湖南省再生稻高产高效栽培技术提供了一定的理论依据。更多还原

【Abstract】 【Objective】It is to investigate the effects of different cultivation patterns on annual yield and and aboveground dry matter quality of ratooning rice. 【Method】 Using Yongyou 4949 and Jingliangyou 1468 as test varieties, three cultivation models were carried out: local production mode(150 kg/hm~2 of nitrogen application, 7∶3 nitrogen-fertiliser basal chasing ratio, planting density of 25 root and stem/m~2), high-yield and high-efficiency mode(120 kg/hm~2 of nitrogen application, 5∶5 nitrogen-fertiliser basal chasing ratio, planting density of 30 root and stem/m~2), and the re-high-yield and high-efficiency mode(150 kg/hm~2 of nitrogen application, 4∶6 nitrogen-fertiliser basal chasing ratio, planting density of 32 root and stem/m~2, 2.25 t/hm~2 of organic fertiliser), and the yields and dry matter qualities of ratoon rice were determined in different cultivation modes. 【Result】 The main and ratoon rice yields of the re-high-yield and high-efficiency model were significantly higher than those of the local production mode, and the main crop yield of Yongyou 4949 in the two years was significantly increased by 39.1% and 40.7%, and the ratoon crop yield by 60.5% and 33.3%, respectively, compared with that of the local production mode. The main crop yield of Jingliangyou 1468 increased significantly by 52.5% and 52.3%, and the ratoon crop yield increased significantly by 82.4% and 25.6%, respectively, compared with the local production mode. In terms of yield components, the main crop and ratoon crop yields increased with the increase in the number of spikes per unit area. In terms of dry matter mass, the highest dry matter accumulation at maturity was observed in ratoon rice under the re-high-yield and high-efficiency mode. 【Conclusion】 The results showed that the re-high-yield and high-efficiency mode achieved the purpose of increasing the yield of ratoon rice. It can provide theoretical basis for high-yield and high-efficiency cultivation technology of ratoon rice in Hunan Province.更多还原