应用缩节安(DPC)调控棉花株型的定位定量效应研究

赵文超,杜明伟,黎芳,田晓莉,李召虎

Location- and quantity-based effects of mepiquat chloride application on cotton plant-type

Wen-Chao ZHAO,Ming-Wei DU,Fang LI,Xiao-Li TIAN,Zhao-Hu LI

图2 2013年和2014年现蕾期(A)、盛蕾期后(B)、盛花期前(C)和盛花期后(D)应用DPC对株高变化动态的影响 CK为对照; M1~M4代表4个DPC剂量; 处理同表2。**表示处理间0.01水平上差异显著, *表示处理间0.05水平上差异显著。#代表月/日, 指DPC的应用时间; 箭头代表生长速度拐点。

Fig. 2 Dynamic changes of cotton plant height of mepiquat chloride (MC) applied at squaring stage (A), after peak squaring (B), before peak blooming (C), and after peak blooming (D) in 2013 and 2014 CK denotes control; M1-M4 indicate four MC rates; Treaments are the same as those given in Table 2. Significance levels among treatments (**P < 0.01 and *P < 0.05) are given. # indicates month/date, MC application time; Arrows represent the inflection point of growth rate.