自流式注射法中苹果树体吸收量回归方程的建立  

Establishment of the regression equation for water absorption in apple trees with auto flowing trunk injection

作　　者：苏律 宋俊霞[1] 胡同乐[1] 王亚南[1] 王树桐[1] 曹克强[1] 

机构地区：[1]河北农业大学植物保护学院,河北保定071001

出　　处：《农药学学报》2016年第1期107-112,共6页Chinese Journal of Pesticide Science

基　　金：国家苹果现代产业技术体系(CARS-28)

摘　　要：为确定苹果树体的有效吸收期并建立初始流速v0与有效吸收期内树体吸收量的回归方程,以纯水为注射液,研究了输液流速与树体吸收量的关系,通过统计软件分析相邻观测时间与对应流速间的函数关系,建立了初始流速v0与树体有效吸收期内吸收量的回归方程。结果表明：树体的有效吸收期为注射开始后048 h;相邻观测时间与对应的流速间存在极显著的一元线性关系和幂函数曲线关系,同时注射期间温度对流速具有一定影响,温度上升时流速上升,温度下降则流速亦下降;v0与48 h内树体的吸收量呈显著回归关系。建立回归方程时,若不区分9：00 am开始注射时的初始流速v0与注射开始后3 h（12：00 am）时流速v3的比值（流速比,v0/v3）关系,且v0在01 m L/min时,采用一元回归方程时的差异率显著高于幂函数方程,而当v0在24 m L/min时,采用幂函数方程的差异率显著高于一元回归方程;若区分流速比,且流速比为0.61,v0为14 m L/min时,采用一元函数方程估测的差异率显著低于幂函数方程,流速比为11.6,v0为04 m L/min时,一元函数与幂函数方程估测的差异率无显著性差异。在不区分流速比的情况下,两类方程的差异率均在20%30%之间。因此,当v0在01 m L/min之间时,建议采用幂函数方程;当v0为12 m L/min时,采用一元函数或幂函数方程均可;当v0在24 m L/min之间时,建议采用一元函数方程。区分流速比时,两类方程的差异率均小于15%。因此,当流速比为0.61,v0在01 m L/min之间时,采用一元函数或幂函数方程均可,当v0为14 m L/min时,建议采用一元函数方程;当流速比为11.6,v0在04 m L/min之间时,采用一元函数或幂函数方程均可。In this study, the interval estimation of the regression equation about the initial speed v0 and the absorption in estimation interval was determined. Pure water was used as the test material. Function relation of adjacent observation time corresponding to the flow speed was analyzed and regression equations of uptake with the initial speed v0 was established by statistical software. The results were as follows. The estimation interval of the regression equation was 0-48 h after injection. The adjacent observation time corresponding to the flow speed had significant linear and exponent curve relationship.Temperature had influence on the flow speed. When temperature rose, flow speed increased. When the temperature dropped, velocity also fell. Significant regression relationship was observed between the initial speed v0 and the absorption 48 h after injection. If the ratio of v0 and v3 was not distinguished, the difference rate of one-factor liner regression was significantly higher than exponent function regression,given that the value range of the initial speed v0 was between 0 m L/min and 1 m L/min. However, the difference rate of the exponent function regression was significantly higher than one-factor liner regression, when the value range of the initial speed v0 was between 2 m L/min and 4 m L/min. If the ratio of v0 and v3 was distinguished and the ratio range was between 0.6 and 1, the difference rate of one-factor liner regression was significantly lower than that of exponent function regression when the value range of v0 was between 1 m L/min and 4 m L/min. With the ratio range from 1 to 1.6, there was no significant difference among different rates, given the v0 value was between 0 m L/min and 4 m L/min. If only v0 was used to estimate the absorption, the range of different rates was between 20% and 30%.When the range of v0 was between 0 m L/min and 1 m L/min, exponent function regression was advised for the estimation of the absorption. When the range of v0 was between 1 m L/min and 2 mL/min,exponent fu

关 键 词：自流式注射法 苹果树 吸收量 回归方程 

分 类 号：S474.9[农业科学—农业昆虫与害虫防治]