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 L.and Brassica napus L.were used in this study.T...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 L.and Brassica napus L.were used in this study.The results showed that compared with the B.napus L.varieties,the growth period of B.campestris L.was 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 B.campestris L.type significantly increased by 40.9%and 38.1%compared with the B.napus L.type.,respectively,while the forage quality of the B.napus L.type rape was significantly better than that of the B.campestris L.type.Compared with the B.campestris L.type,the crude protein(CP),fat,ash and total fatty acid(TFA)contents of the B.napus L.type 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%,respectively.The light and heat resources before wintering increased the WR and PD(P<0.05),and were positively correlated with FFY and DFY(P>0.05),and lower temperature during the wintering period led to lower WR(P<0.01).The light and heat resources during the overwintering 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 rainfall.In summary,in the North China Plain,for autumn sowing rape,the B.campestris L.type can be selected to improve the wintering rate,and the B.napus L.type should be the main choice to improve the forage quality of rape.Therefore,the B.napus L.variety HYZ62 can be selected for autumn sowing in the North China Plain.展开更多
Based on SWOT analysis method,this paper conducts analysis on the industrial development environment of double-low rapeseed in Hubei Province from the following four aspects,in order to crystallize its resources advan...Based on SWOT analysis method,this paper conducts analysis on the industrial development environment of double-low rapeseed in Hubei Province from the following four aspects,in order to crystallize its resources advantage and disadvantage and make it know the opportunities and challenges that it is faced by.First,advantage analysis:excellent geographic conditions,vigorous government support,powerful scientific research force,sound industrial system support;second,disadvantage analysis:poor quality,low-level fine and deep processing,scant publicity and promotion,lagged infrastructure conditions,shortage of effective market access mechanism and sound industry regulation,no brand effect;opportunity analysis:the opportunities brought by low-carbon economy,the opportunities brought by consumers' preference,the opportunities brought by policy environment,the opportunities brought by establishment of strategic union;threat analysis:fierce external competition,continuous decline of comparative benefit.The results of research show that in order to promote industrial development of double-low rapeseed in Hubei Province,we should implement brand effect strategy,quality management strategy and strategy of deepening industrial system,give full play to existing geographic advantage and other advantages,grasp scarce opportunities and actively confront challenges.展开更多
旨在探讨适合吉林地区麦后复种饲用油菜与燕麦混合播种方案。试验以单播油菜(15 kg·hm^(-2))和燕麦(220 kg·hm^(-2))为对照组,按照播种量占单独播种量50%、60%、70%、80%、90%、100%的比例进行组合混播,以A~F顺序标记燕麦播种...旨在探讨适合吉林地区麦后复种饲用油菜与燕麦混合播种方案。试验以单播油菜(15 kg·hm^(-2))和燕麦(220 kg·hm^(-2))为对照组,按照播种量占单独播种量50%、60%、70%、80%、90%、100%的比例进行组合混播,以A~F顺序标记燕麦播种率,以1~6顺序标记油菜播种率,设定3次重复,共计108个试验小区。播种后分别在油菜抽薹期、盛花期、结荚期取样,对作物的生产性能进行评价,并采用灰色系统理论对结果进行分析。结果表明:抽薹期试验组干草产量范围是3999.89~5367.28 kg DM·hm^(-2),粗蛋白质含量范围是10.16%~13.99%,中性洗涤纤维含量范围是49.88%~64.51%,酸性洗涤纤维含量范围是36.88%~41.52%。盛花期试验组干草产量范围是5102.35~6453.52 kg DM·hm^(-2),粗蛋白质含量范围是11.28%~16.01%,中性洗涤纤维含量范围是57.99%~69.37%,酸性洗涤纤维含量范围是33.88%~48.80%。结荚期试验组干草产量范围是5737.16~6988.16 kg DM·hm^(-2),粗蛋白质含量范围是9.25%~13.12%,中性洗涤纤维含量范围是57.10%~68.88%,酸性洗涤纤维含量范围是32.99%~41.01%。表明混播处理C1在油菜抽薹期和盛花期的综合评价最高,干草产量分别为5281.23及6152.52 kg DM·hm^(-2)。混播处理C2在结荚期综合评价最优,干草产量为6988.16 kg DM·hm^(-2)。展开更多
基金National Key Research and Development Program of China(2017YFD0200808)Seed Science and Technology Major Special Program of Tianjin(18ZXZYNC00100)+1 种基金Scientific Research Program(Natural Science)of Tianjin Education Committee(2019KJ039)Graduate Research Innovation Program of Tianjin(2020YJSS128).
文摘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 L.and Brassica napus L.were used in this study.The results showed that compared with the B.napus L.varieties,the growth period of B.campestris L.was 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 B.campestris L.type significantly increased by 40.9%and 38.1%compared with the B.napus L.type.,respectively,while the forage quality of the B.napus L.type rape was significantly better than that of the B.campestris L.type.Compared with the B.campestris L.type,the crude protein(CP),fat,ash and total fatty acid(TFA)contents of the B.napus L.type 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%,respectively.The light and heat resources before wintering increased the WR and PD(P<0.05),and were positively correlated with FFY and DFY(P>0.05),and lower temperature during the wintering period led to lower WR(P<0.01).The light and heat resources during the overwintering 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 rainfall.In summary,in the North China Plain,for autumn sowing rape,the B.campestris L.type can be selected to improve the wintering rate,and the B.napus L.type should be the main choice to improve the forage quality of rape.Therefore,the B.napus L.variety HYZ62 can be selected for autumn sowing in the North China Plain.
基金Supported by Key Program of The Eleventh Five-year Plan Technology Support Plan in China(2008BAD93B04) .
文摘Based on SWOT analysis method,this paper conducts analysis on the industrial development environment of double-low rapeseed in Hubei Province from the following four aspects,in order to crystallize its resources advantage and disadvantage and make it know the opportunities and challenges that it is faced by.First,advantage analysis:excellent geographic conditions,vigorous government support,powerful scientific research force,sound industrial system support;second,disadvantage analysis:poor quality,low-level fine and deep processing,scant publicity and promotion,lagged infrastructure conditions,shortage of effective market access mechanism and sound industry regulation,no brand effect;opportunity analysis:the opportunities brought by low-carbon economy,the opportunities brought by consumers' preference,the opportunities brought by policy environment,the opportunities brought by establishment of strategic union;threat analysis:fierce external competition,continuous decline of comparative benefit.The results of research show that in order to promote industrial development of double-low rapeseed in Hubei Province,we should implement brand effect strategy,quality management strategy and strategy of deepening industrial system,give full play to existing geographic advantage and other advantages,grasp scarce opportunities and actively confront challenges.
文摘旨在探讨适合吉林地区麦后复种饲用油菜与燕麦混合播种方案。试验以单播油菜(15 kg·hm^(-2))和燕麦(220 kg·hm^(-2))为对照组,按照播种量占单独播种量50%、60%、70%、80%、90%、100%的比例进行组合混播,以A~F顺序标记燕麦播种率,以1~6顺序标记油菜播种率,设定3次重复,共计108个试验小区。播种后分别在油菜抽薹期、盛花期、结荚期取样,对作物的生产性能进行评价,并采用灰色系统理论对结果进行分析。结果表明:抽薹期试验组干草产量范围是3999.89~5367.28 kg DM·hm^(-2),粗蛋白质含量范围是10.16%~13.99%,中性洗涤纤维含量范围是49.88%~64.51%,酸性洗涤纤维含量范围是36.88%~41.52%。盛花期试验组干草产量范围是5102.35~6453.52 kg DM·hm^(-2),粗蛋白质含量范围是11.28%~16.01%,中性洗涤纤维含量范围是57.99%~69.37%,酸性洗涤纤维含量范围是33.88%~48.80%。结荚期试验组干草产量范围是5737.16~6988.16 kg DM·hm^(-2),粗蛋白质含量范围是9.25%~13.12%,中性洗涤纤维含量范围是57.10%~68.88%,酸性洗涤纤维含量范围是32.99%~41.01%。表明混播处理C1在油菜抽薹期和盛花期的综合评价最高,干草产量分别为5281.23及6152.52 kg DM·hm^(-2)。混播处理C2在结荚期综合评价最优,干草产量为6988.16 kg DM·hm^(-2)。
