论文部分内容阅读
空秕粒是水稻高产稳产的重要障碍。据调查,在一般正常栽培条件下,空秕率在10～25%。特别是长江以南地区,复种指数高,生育期短,一遇不良气候条件空秕率则更高,严重影响产量。因此,弄清空秕率形成的原因,以便采取有效措施,防止或减少空秕粒,这是提高水稻产量的一项重要措施。一、空秕粒形成的原因形成水稻空秕粒的因素很多,其机制也很复杂,据调查,长江下游地区主要有以下几方面的因素: 1.温度:温度过高或过低都能引起水稻形成空秕粒,特别是在孕穗期和开花期影响最大。水稻从孕穗、抽穗、开花受精直到灌浆
Kongnai grain is an important obstacle to high and stable yield of rice. According to the survey, under normal normal cultivation conditions, the rate of empty cake is 10-25%. Especially in the area south of the Yangtze River, the multiple cropping index is high and the growth period is short. In one case, the air pollution rate in poor weather conditions is even higher, seriously affecting the yield. Therefore, clarifying the reasons for the formation of the rate of air pollution in order to take effective measures to prevent or reduce the empty particles, which is an important measure to increase rice production. First, the formation of empty rice grain formation of rice Kong Kong tablets due to many factors, the mechanism is very complicated, according to the survey, the Yangtze River region mainly in the following aspects: 1. Temperature: the temperature is too high or too low can cause Paddy rice formed Kong, especially in booting and flowering of the greatest impact. Rice from booting, heading, flowering and fertilization until grouting