2003年气象因素对信阳水稻产量的影响分析

从气象角度分析,2003年信阳市水稻减产的主要原因有:苗期、分蘖期、抽穗开花期、灌浆乳熟期遭受连阴雨天气及低温冷害影响;抽穗开花期遭受高温热害、中后期遭农业气象灾害衍生的病虫害的共同影响,致使水稻生育期延长、有效分蘖减少、穗粒数减少、空秕率增加、灌浆速度减慢、千粒重及品质下降。全市水稻减产30%以上。

Analysis of impact of the meteorological factor of 2003 on Xinyang rice output

Analysis from the meteorological angle, the main reason that Xinyang rice was dropped in production of 2003: seedling stage, ear florescence , form a vesicle milk familiar issue connect with into overcast and rainy days and cold to is it influence to suffer from low temperature have, ear hot to suffer from high temperature , agricultural weather common influence of plant diseases and insect pests that calamity derive middle and later periods florescence, causing the rice to lengthen in breeding time, divide tillers to reduce effectively,ear of grain grain is it reduce , not empty to is it increase , form a vesicle speed not to slow down to lead while being not plump to count, a thousand in weight and quality drop. The whole city rice drops by more than 30% in production.