气候变暖下西南春玉米生长季不利气象条件的时空演变

黄亿, 王靖, 赫迪, 唐建昭

Temporal-spatial change in adverse meteorological conditions during spring maize growth in Southwest China under climate warming

Yi HUANG, Jing WANG, Di HE, Jianzhao TANG

表4 基于作物水分盈亏指数的玉米水分盈亏等级划分

Table 4 Maize water surplus /deficit degree based on crop water budget index

		播种-拔节	拔节-灌浆	灌浆-成熟
重度盈余	$\begin{matrix} I_{mean} + σ \leq I \end{matrix}$	>2.5	>3.0	>3.5
中度盈余	$\begin{matrix} I_{mean} \leq I < I_{mean} + σ \end{matrix}$	1.3~2.5	1.7~3.0	1.9~3.5
轻度盈余	$\begin{matrix} I_{mean} - σ \leq I < I_{mean} \end{matrix}$	0.1~1.3	0.3~1.7	0.4~1.9
正常	$\begin{matrix} I > 0, I < I_{mean} - σ ； I < 0, I \geq I_{mean} + σ \end{matrix}$	-0.1~0.1	-0.1~0.3	-0.1~0.4
轻度亏缺	$\begin{matrix} I_{mean} \leq I < I_{mean} + σ \end{matrix}$	-0.1~-0.3	-0.1~-0.4	-0.1~-0.3
中度亏缺	$\begin{matrix} I_{mean} - σ \leq I < I_{mean} \end{matrix}$	-0.3~-0.6	-0.4~-0.6	-0.3~-0.6
重度亏缺	$\begin{matrix} I_{mean} - σ > I \end{matrix}$	<-0.6	<-0.6	<-0.6