答者:河南农大苏金乐教授问:从广东引进的广玉兰为啥生长不好?答:你得考虑两个问题,一是广东到河南引种时距离太远,主要是气候差异太大。南方温度偏高,但北方,尤其是冬季,温度比较低,尤其在野外,广玉兰适应不了北方这种极端的冻害。另一个是空气湿度问题,南方经常下雨,空气湿度 A: Henan Agricultural University Professor Su Jinle Q: Why is the growth of Magnolia grandiflorum introduced from Guangdong poor? A: You have to consider two issues, one is far from the introduction of Henan to Henan, the main climate difference is too large. Temperatures are high in the south, but the temperatures in the north, especially in winter, are relatively low, especially in the wild. Magnolia grandiflora can not cope with such extreme frost damage in the north. The other is the air humidity problem, the South often rains, air humidity