论文部分内容阅读
一、寒风害 (一)发生原因与机制在西向坡地与山坳等冬季季风旺盛地方栽培的温州蜜柑,冬季落叶多占总叶数的30～50%。柑桔类的寒风害与寒冷地区树木等的寒风害不同,一次性受害并不引起树体枯死,但冬季的异常落叶,容易招致花芽分化受抑制,和着花不良、结果量减少或果实品质下降等,因而为人们所重视。对其发生原因,已有许多研究,但着重于蒸腾和吸水、气象因素对体内水分的影响及与风速的关系等。柑桔类冬季吸水量减少,为夏季的6～7%,
First, the cold hazards (A) causes and mechanisms In the western slopes and col and other winter monsoon vigorous cultivation of Satsuma, winter leaves more than the total number of leaves accounted for 30 to 50%. The cold wind damage of citrus is different from the cold wind damage of trees in cold areas. The one-time victimization does not cause the tree to die. However, abnormal deciduous leaves in winter can easily lead to suppression of flower bud differentiation and poor flower yield, Fruit quality decline, so people pay attention. There are many studies on its causes, but the emphasis is on the effects of transpiration and water absorption, meteorological factors on body moisture and the relationship with wind speed. Citrus winter water absorption decreased for the summer of 6 to 7%