摘要
[目的]研究肥料运筹方式对湖南地区双季早稻产量及产量形成的影响.[方法]以陵两优104为供试材料,于2015年在湖南农业大学浏阳基地进行大田小区试验,总施氮量为180 kg/hm2,设5个肥料运筹处理试验,即基肥、分蘖肥、穗肥、粒肥比例分别为1∶0∶0∶0、7∶3∶0∶0、5∶3∶2∶0、4∶3∶2∶1及2∶3∶3∶2,研究不同肥料运筹处理对陵两优104的叶龄进程、茎蘖动态以及产量及产量构成的影响.[结果]基肥、分蘖肥、穗肥、粒肥比例为2∶3∶3∶2处理的产量最高,达8 275.50 kg/hm2,分别与1∶0∶0∶0、7∶3∶0∶0处理达5％显著差异水平;随着后期基蘖肥比例的减小,结实率、每穗粒数和千粒重总体呈减少趋势;与其他处理相比,2∶3∶3∶2处理可显著增加分蘖数与叶龄数.[结论]基肥、分蘖肥、穗肥、粒肥比例分别为2∶3∶3∶2的均衡肥料运筹方案有利于湖南地区双季早稻获得高产.
Abstract
[Objective] The aim was to ascertain the effects of fertilizer planning modes on the yield and yield formation of early rice on double cropping system in Hunan Province.[Method] Taking Lingliangyou104 as test material,field experiment was conducted on Liuyang base,Hunan Agricultural University in 2015.Total applied nitrogen amount was 180 kg/hm2.Five fertilizer application treatments were designed:basal,midtilling stage,panicle initiation and heading stage as ratios of 1 ∶ 0∶ 0∶ 0,7∶ 3∶ 0∶ 0,5∶ 3∶ 2∶ 0,4∶ 3∶ 2∶1 and 2∶ 3∶ 3∶2 respectively.Effects of different fertilizer planning modes on leaf age process,tiller dynamics,yield and yield components were studied.[Result] The ratio of basal,mid-tilling stage,panicle initiation and heading stage as 2∶ 3∶ 3∶2 had the highest yield,up to 8 275.50 kg/hm2,and had significant differences at 0.05 level compared with 1∶0∶0∶ and 7∶3∶0∶0;with the decrease of late basal fertilizer ratio,seed-setting rate,grain number per ear and 1000-grain weight decreased;compared with other treatments,2∶ 3∶ 3∶2 treatment could significantly increase tiller number and leaf age.[Conclusion] It is concluded that the ratio of basal,mid-tilling stage,panicle initiation and heading stage as 2∶ 3∶ 3∶2 is an equilibrium application strategy for early rice on double cropping system to get high-yield in Hunan Province.
基金项目
湖南省教育厅重点项目(12A071)
国家科技支撑计划项目(2011BAD16B01)
国家科技支撑计划项目(2012BAD04B10-01)
国家科技支撑计划项目(2013BAD07B11-02)
国家科技期刊平台
NSTL
维普
万方数据