旬温度适宜度
Ten days temperature suitability
| 温度适宜度S(T)
Temperature suitability S(T) | $S(T)=[(T-T_1)(T_2-T)^B]/[(T_0-T_1)(T_2-T_0)^B]\\B= (T_2-T_0)/(T_0-T_1)$ | T是旬平均温度,T1、T2、T0分别是该时段生长发育下限温度、上限温度和最适温度,分别取值4、33、15[42]
T is the ten days average temperature, T1, T2, T0 are the lower limit temperature, upper limit temperature and the most suitable temperature for growth and development in this period, taking 4, 33, 15 respectively [42] |
旬降水适宜度
Ten days precipitation suitability
| 降水适宜度S(R)
Precipitation suitability S(R) | $S(R)=\begin{cases} R/ R_{0} & R<R_{0} \\ R_{0}/R & R> R_{0} \end{cases}$ | R为旬平均降水量（mm）,R0为作物生理需水量,研究中,10月上旬和中旬R0分别11mm和9.1mm[42]
R is tens day average precipitation (mm), R0 is the physiological water demand of crops, in the first ten days and the middle ten days of October, R0 is 11mm and 9.1mm respectively [42] |
旬日照适宜度
Ten days sunshine suitability
| 日照适宜度S(L)
Sunshine suitability S(L) | $S(L)=\begin{cases} e^{-[(L-L_{0})/b]^{2}} & L<L_{0} \\ l & L\geq L_{0} \end{cases}$ | L表示实际日照时数（小时）,L0表示日照百分率为70%的日照时数,b为常数,文中L0=7.69,b=4.15[42]
L represents the actual sunshine hours (hours), L0 is the sunshine hours with the sunshine percentage of 70%, and b is a constant. In this paper, L0 = 7.69, b = 4.15 [42] |