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Effects of Meteorological Factors on Overwintering ability,Yield and Quality of Forage Rape

Agricultural Biotechnology 2021年第3期10卷 15-21,25页

作者： Yao ZHANG Junzhu GE Guangsheng ZHOU Xidong WU Yong an YANG Haipeng HOU Qian LIANG Zhiqi MA College of Agronomy&Resources and Environment Tianjin Agricultural UniversityTianjin 300392China National Key Lab of Crop Genetic Improvement Huazhong Agricultural UniversityWuhan 430070China Tianjin High quality Agricultural Products Development Demonstration Center Tianjin 300061China Tianjin Planting Industry Development Service Center Tianjin 300061China

In order to investigate the effects of meteorological factors on rape overwintering ability,forage yield and quality of rape in the North China plain,Brassia campestris *** Brassica napus *** used in this *** results showed that compared with the *** ***,the growth period of *** *** shortened by 10-15 d,the overwintering rate(WR)increased by 50.6%,and the density after winter(PD)increased by 41.5%.The fresh forage yield(FFY)and dry forage yield(DFY)of the *** *** significantly increased by 40.9%and 38.1%compared with the *** ***.,respectively,while the forage quality of the *** *** rape was significantly better than that of the *** *** with the *** ***,the crude protein(CP),fat,ash and total fatty acid(TFA)contents of the *** *** of rape increased by 27.6%,42.9%,23.9%and 52.3%,respectively,and the milk productivity(HM),relative forage value(RFV)and relative forage quality(RFQ)increased by 14.0%,16.2%and 42.1%,*** light and heat resources before wintering increased the WR and PD(P0.05),and lower temperature during the wintering period led to lower WR(Pwintering period and after regreening were negatively correlated with FFY and DFY(P>0.05).The contents of CP,fat and TFA of rape had an extremely significant negative correlation with the temperature and sunshine hours before wintering,but an extremely significant positive correlation with the temperature during the wintering period and after regreening,as well as the sunshine hours and rainfall during the wintering period;and HM had an extremely significant positive correlation with the temperature,sunshine hours and rainfall during the wintering period,while RFV and RFQ were only extremely significantly positively correlated with the maximum temperature and *** summary,in the North China Plain

关键词： Forage rape Meteorological factors wintering ability Forage yield Forage quality

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