不同播期对大棚秋延后辣椒主要性状的影响  

Effects of Different Sowing Dates on the Main Characters of Hot Pepper in Greenhouse in Late Autumn

作　　者：杨连勇 张忠武 陈位平 康杰 孙信成 蒋万 冷丽萍 杜云安[2] YANG Lianyong;ZHANG Zhongwu;CHEN Weiping;KANG Jie;SUN Xincheng;JIANG Wan;LENG Liping;DU Yunan(Changde Agriculture and Forestry Science Academy,Changde 415000,China;Changde Vocational and Technical College,Changde 415000,China)

机构地区：[1]常德市农林科学研究院,湖南常德415000 [2]常德职业技术学院,湖南常德415000

出　　处：《辣椒杂志》2021年第3期13-17,35,共6页Journal of China Capsicum

基　　金：湖南省农业科技创新资金项目(2021CX53);常德市科技局指导项目(2013ZD64、2015ZD24、2017ZD21)。

摘　　要：为探讨不同播期对辣椒主要性状的影响,以辣椒品种兴蔬215为试材,设7月15日、7月30日、8月14日、8月29日等4个播期,对不同播期X与产量Y,及始花期Z1、始收期Z_(2)、单果质量Z_(3)、单果长Z_(4)、单果宽Z_(5)、节间长Z_(6)、叶长Z_(7)、叶宽Z_(8)、株高Z_(9)、开展度Z_(10)等性状开展研究,并进行相关性、回归、模型拟合筛选分析。结果发现,产量随播期延迟下降,以7月15日播期产量最高,每667 m^(2)鲜椒产量达2548.00 kg,8月29日播期产量最低,每667 m^(2)鲜椒产量为733.20 kg;播期越迟,始收所需时间越长,7月15日播期始收期为76 d,8月29日播期始收期为101 d;播期X与辣椒始花期Z_(1)、始收期Z_(2)、单果质量Z_(3)、叶长Z_(7)、叶宽Z_(8)呈极显著正相关,与单位面积产量Y、节间长Z_(6)、开展度Z_(10)呈极显著负相关。结果表明,播期X与单位面积产量Y的关系式为Y=-0.68X^(2)-8.69X+2565.10,说明生产上除了选择早播种外,还可以从增大树体(株高Z_(9)和开展度Z_(10))、增大节间长Z_(6)、缩小叶面积(叶长Z_(7)×叶宽Z_(8))、减轻单果质量Z_(3)等措施来提高单位面积产量Y。Xingshu 215 was sowed on July 15,July 30,August 14,and August 29,respectively.The related indexes were measured,which included yield Y,first flowering date Z_(1),first harvest date Z_(2),single fruit weight Z_(3),single fruit length Z_(4),single fruit width Z_(5),internode length Z_(6),leaf length Z_(7),leaf width Z_(8),plant height Z_(9),and development degree Z_(10).Correlation,regression and model fitting were used to analyze the data.The results showed that the yield decreased with the delay of sowing date.The yields of pepper sowed at July 15 and August 29 were 2548.00 kg and 733.20 kg,respectively.The later the sowing date was,the longer the time to start harvesting.The start harvesting durings for the sowing dates on July 15 and August 29 were 76 d and 101 d,respectively.The sowing date X was positively correlated with the initial flowering date Z_(1),the initial harvest date Z_(2),the fruit weight Z_(3),the leaf length Z_(7),and the leaf width Z_(8),respectively.Negative correlations were observed between the sowing date X and the yield,the internode length Z_(6),and the development degree Z_(10),respectively.The regression formula between the sowing date X and yield Y was Y=-0.68X2-8.69X+2565.10.These results indicated that in addition to early sowing,the yield could be increased by increasing tree height(Z_(9)),development degree(Z_(10)),internode length(Z_(6)),and decreasing leaf area(Z_(7)×Z_(8))and fruit weight(Z_(3)).

关 键 词：播期 大棚 秋延后 辣椒 主要性状 

分 类 号：S641.3[农业科学—蔬菜学] S626[农业科学—园艺学]