【作者】 何永福； 张昌容； 叶照春； 李鸿波； 朱峰； 商胜华；

【Author】 Yongfu He;Changrong Zhang;Zhaochun Ye;Hongbo Li;Feng Zhu;Shenghua Shang;Guizhou Province Institute of Plant Protection;Guizhou Academy of Tobacco Science;

【机构】 贵州省植物保护研究所； 贵州省烟草科学研究院；

【摘要】 为了明确烟田主要杂草反枝苋对贵州烤烟产质量的影响。反枝苋按0~25株/m~2的密度共设置13个处理,在烤烟成熟期记录株高、茎粗、叶片数、叶长、叶宽、叶鲜质量、地上植株鲜质量、茎秆鲜质量、叶干质量、产值等一系列指标参数,通过11种曲线方程进行拟合、回归分析。结果发现三次方程(Y=b0+b1x+b2x2+b3x3)具有最高的拟合度和实用性,建议生产上通过该三次方程进行预测反枝苋对烟草产量、产值的影响。更多还原

【Abstract】 The objective of this study is to determine the effects of density of Amaraniltus retroflexus L.population on yield and quality of flue-cured tobacco in Guizhou.13 levels of density of Amaranthus retroflexus L.were setup ranging from 0-25 plants per m2,and a series of traits of flue-cured tobacco were recorded such as the plant height,stem diameter,leaf number,leaf length,leaf width.leaf fresh weight,the ground plant fresh weight,stem fresh weight,leaf dry weight,value and so on in the mature flue-cured tobacco.To find out the best model to fit the data of Amaraniltus retroflexus L.density and tobacco yields,11 kinds of curve equation were used.The results showed that the cubic equation（Y=b₀+b₁x+b₂x²+b₃x³） exhibited highest and most practical fitting for the data we got.In conclusion,the relationship of flue-cured tobacco yield and Amaraniltus retroflexus L population density can be predicted using cubic equation.更多还原