关键词: 猪流感, 猪流感, 生物学特性, A型流感病毒

Abstract:

The phenomenon of rice spike develop abnormality, has caused a serious reduction of rice grain yield, or even the phenomenon of serious economic losses of farmers, in Jianghuai Hilly Land in recent years. This paper briefly describes the symptoms and characteristics of the occurrence of the phenomenon of rice spike develop abnormality, and briefly analyzes the impact of the physiological factors and other factors in this phenomenon, and several suggestions. For which the author briefly introduces the symptoms and characteristics of the phenomenon of rice spike develop abnormality, from the rice 'glume mutant', mature male and female sex organs hypoplasia inconsistent, underdeveloped sex organs of male and female spikelets fertilization process can not be completed, ear disorders caused by nutritional way to stop development of the ovary or other physiological endosperm factors on rice spike develop abnormality, in a brief analysis of the impact, and from high temperature, heavy metal toxicity and unbalanced conditions of soil moisture and other external factors on rice spike develop abnormality, in a brief analysis of the impact. According to the occurrence of the phenomenon rice of spike develop abnormality, the author gives some suggesting on the choosing of rice varieties, reasonable planting, fertilizing and other aspects of science-related proposals.