玉米的生产,若果热量水分不足,就不能正常生长发育和形成产量。因此,1976至1978年我们在天等县南部的福新,北部的向都两地进行试验,以“天等四号”为供试品种,通过分期播种,探索玉米对热、水条件的需求。现将结果分析于后:一、热量在水分条件满足的情况下,玉米的生育过程,主要受热量条件制约。据有关材料称:玉米中迟熟品种全生育期对雨量的要 Corn production, if the lack of heat moisture, it can not be normal growth and development and the formation of output. Therefore, from 1976 to 1978, we experimented in Fuxin and northern part of the southern part of Tianbian County to both places. Using “Tian No. 4” as the test variety, we planted the crops by stages and explored the demand of corn for the heat and water conditions . Now the results of the analysis: First, the heat in the water conditions to meet the circumstances, the process of maize growth, mainly due to heat conditions. According to the material said: late maturing varieties of corn on the rainfall throughout the growth period