【摘要】 为了探明免耕超级稻的应用效益、生长发育规律及配套技术,2006～2008年在广西永福县、田东县、玉州区等13个县(市、区)开展了超级稻免耕对比试验、免耕条件下超级稻与普通稻对比试验、免耕条件下超级稻不同栽培密度和不同施氮水平试验。结果表明:免耕超级稻植株高大、茎秆粗壮、抗倒伏能力强、总颖花量大、穗大粒多、结实率高、产量高,比常耕栽培产量提高7.2%～10.8%;免耕超级稻的最高产量可达12361.5 kg/h評;6个免耕超级稻百亩示范片平均产量达10746.0kg/h評;小区对比试验超级稻比普通稻增产1500kg/h評以上,增幅达20%以上;超级稻早稻密度为27.0万～30.0万蔸/h評,晚稻密度为33.0万蔸/h評时,产量达到最大值;超级稻施氮量为纯氮180～210kg/h評时,节本增收效果最好。更多还原

【Abstract】 In order to know about the applying benefits,growth and development law,and matching cultivation technology for no-tillage super rice,the comparison experiments for no-tillage super rice varieties,super rice and normal rice varieties under no-tillage condition,different cultivated densities and nitrogen application levels for super rice under no-tillage condition were conducted in 13 counties(city or district) including Yongfu,Tiandong,Yuzhou District,etc,in Guangxi in 2006-2008.The results showed that the no-tillage super rice had high and strong plants,strong resistance to loading,large of total spikelets,large panicle and many grains,higher seed setting rate and yield,and the yield increased by 7.2%-10.8% compared to conventional tillage cultivation.The highest yield of no-tillage super rice could reach 12361.5kg/hm2,and the average yield of six 100-mu demonstrations for no-tillage super rice reached 10746.0kg/hm2.The increased yield of no-tillage super rice was over 1500 kg/hm2 compared to normal rice in plot experiments,and increased by over 20%.Moreover,the yield of no-tillage super rice would reach the highest when the planted density of early rice and late rice was from 270 thousand to 300 thousand plants per hectare,and 330 thousand plants per hectare,respectively.When the application of nitrogen was 180-210 kg/hm2,the effects of saving cost and improving income would be the best.更多还原