摘要
通过稀播培育壮秧、宽行窄株、前氮后移、间歇灌溉加80%够苗晒田等措施,形成了一套优化栽培模式。通过田间试验,以双季稻品种为试验材料,比较研究了该优化栽培模式(OPT)与农民习惯模式(FP)对水稻产量形成、分蘖成穗、干物质积累及氮素吸收利用等的影响。结果表明:早、晚稻的产量均表现为OPT>FP;在节省氮、磷肥10%的条件下,应用OPT仍能增产10%以上。该模式主要提高了稻株对氮素吸收利用的能力,优化了群体分蘖成穗的条件,提高了抽穗至成熟期的光合物质积累量,优化了穗部性状,通过协调出高的群体颖花量并保持较高的结实率,最终实现增产。
We used the improvement measures such as sowing litter seeds to build the strong seedlings,space line and narrow plant distance,application of the front nitrogen at later growth stage,intermittent irrigation and drying the rice paddy at the 80%enough seedlings stage to form a set of cultivation mode,and compared the effect of the optimal cultivation mode(OPT)with the farmer’s practices(FP)in yield formation,tillering and bearing,dry matter accumulation and nitrogen absorption and utilization by the field experiment.The double-cropping rice varieties were taken as materials.The Results showed that the yield of double-cropping rice was OPT>FP.Under the condition of 10%nitrogen and phosphorus less than the FP,OPT could increase by more than 10%yield.The OPT model mainly improved the ability of nitrogen absorption and utilization,optimized the quality of the tillers,enhanced the photosynthetic matter accumulation from the heading to mature period,optimized the panicle characteristics of coordination with high grains population,maintained the higher seed-setting rate,finally realized the high production.
作者
钱银飞
曾勇军
陈金
谢江
吴玉成
杨小华
彭春瑞
QIAN Yin-fei;ZENG Yong-jun;CHEN Jin;XIE Jiang;WU Yu-cheng;YANG Xiao-hua;PENG Chun-rui(Institute of Soil and Fertilizer&Resources and Environment,Jiangxi Academy of Agricultural Sciences/Key Laboratory of Crop Ecophysiology and Farming System for the Middle and Lower Reaches of the Yangtze River,Ministry of Agriculture and Rural Affairs/National Engineering and Technology Research Center for Red Soil Improvement,Nanchang 330200,China;Jiangxi Agricultural University,Nanchang 330045,China;Wenzhen Agricultural Technique Extension Station,Jinxian 331721,China)
出处
《江西农业学报》
CAS
2020年第9期1-5,共5页
Acta Agriculturae Jiangxi
基金
国家重点研发计划(2018YFD0800503、2016YFD0801101)
江西省重点研发计划(20161ACF60013)。
关键词
双季稻
栽培模式
产量
分蘖成穗
穗部性状
氮素
吸收与利用
Double-cropping rice
Cultivation mode
Yield
Tillering and bearing
Panicle characteristics
Nitrogen
Absorption and utilization
