Total age\|specific fertility rate (TFR) population model of China and its alarm forecasting OsRRMh, a Spen-like Gene, Plays an Important Role during the Vegetative to Reproductive Transition in Rice Effects of Temperature and Light on the Fertility Rate of Two-line Hybrids (F1)Based on Different Kinds of TGMS Alarm of Malthus and government intervention policy to population of China