近年来柑桔谢花后,尤其是5月,往往出现大量落果,无核品种、品系如温州蜜柑中的早熟品系更为严重。特别今年部分果园,落果多造成减产。什么原因呢?这使我们联想到气温与落果的关系。近年来在初夏即5月初、5月下旬突然出现高温天气,今年内江市各县前期低温,4月28日—5月3日连续高温,气温高达38℃左右,个别地区高达39℃。而这些地区落果严重,通过了解证实突然高温在柑桔幼果期间是引起异常落果的原因。而且在初夏低温升到高温过程中尤为严重。突然高温引起的异常落果是什么道理呢?据有关资料介绍,柑桔在谢花后,第一二次生理落 In recent years, Citrus grateful flower, especially in May, there are often a large number of fruitless, non-nuclear varieties, such as Wenzhou mandarin lines in the early maturing lines more serious. In particular, some orchards this year, resulting in more fruit loss. What causes? This reminds us of the relationship between temperature and fruit drop. In recent years, in early summer, early May and late May, there suddenly appeared hot weather. In this year, the Neijiang counties were at low temperatures in the early period, with continuous high temperatures from April 28 to May 3 with temperatures as high as about 38 ° C and as high as 39 ° C in some areas. And these areas seriously fall through the understanding confirmed sudden high temperatures in citrus young fruit is the cause of abnormal fruit drop. And in early summer low temperature rose to high temperature is particularly serious. Suddenly high temperatures caused by the abnormal drop what is the truth? According to the relevant information, citrus in Xiehua, the first two physiological fall