不同有机无机肥配施比例对湘杂油763生长和产量的影响

Effect of Organic and Chemical Fertilizer Combined Ratio on Growth and Yield of Rapeseed Variety Xiangzayou 763

采用小区试验,于2009-2010年在浏阳市永安镇,研究不同有机无机肥配施比例对湘杂油763生长和产量的影响。结果表明,各处理产量和含油量为10%OM处理>0%OM处理>30%OM处理>50%OM处理;10%OM处理产量(2 055.00kg/hm2)显著高于其他处理;有机肥用量超过30%时油菜籽粒产量开始下降,50%OM处理产量最低。各时期农艺性状基本都与产量变化规律相似,且与产量之间的相关系数都为正值,尤其是盛花期的生物量和10cm以上分枝数与产量的相关系数都达到极显著水平,盛花期的其他农艺性状也大多达显著水平。在本试验中,盛花期各农艺性状能很好反映收获期油菜籽粒产量情况,10%OM处理为最佳有机无机肥配施比例。

Field experiment was conducted in Yongan,Liuyang city from 2009 to 2010 to study the effect of different organic and chemical fertilizer combined ratio on growth and yield of rapeseed variety Xiangzayou763.The result showed that,the yield and oil content were in the following order,10% OM treatment 0% OM treatment 30%OM treatment 50% OM treatment;the highest yield of 10%OM treatment reached 2 055.00 kg/hm2,significantly higher than the other treatments,yield of 0%OM treatment was 1 898.08 kg/hm2;At the same time,yield of oilseed rape began to declined when the organic manure applied rate was more than 30%,hence we can know the minimum yield is treatment 50%OM.Agronomic characterize for each treatment at different growth stages showed the resembling regulation.Meanwhile agronomic characteristics had the positive correlation with yield,especially at full-bloom stage,the correlation coefficients of biomass and branch numbers in shoot both reached 0.990＊＊,the other agronomic characteristics at this stage were also significant.In conclusion,the characteristics at full-bloom stage can well reflect rapeseed yield at harvest stage,moreover,10% OM treatment is the most reasonable combined ratio for organic and chemical fertilizer application.