玉林市早稻空秕率与抽穗后气象条件的关系探析  

Study on the relationship between empty grain rate and meteorological conditions after heading of early rice in Yulin City

作　　者：陆小林 农柳蓬 陈利东 Lu Xiaolin;Nong Liupeng;Chen Lidong(Yulin Meteorological Service,Yulin Guangxi 537000;Liuzhou Meteorological Service,Liuzhou Guangxi 545000)

机构地区：[1]玉林市气象局,广西玉林537000 [2]柳州市气象局,广西柳州545000

出　　处：《气象研究与应用》2020年第1期89-92,共4页Journal of Meteorological Research and Application

基　　金：广西科技重点研发计划项目“基于“3s”技术的水稻高温热害预测和灾害区划技术研究与示范”(桂科AB17195037)。

摘　　要：利用2008-2018年玉林市农业气象试验站定位稻田实验观测数据,对早稻空秕率与抽穗后各气象因子的关系进行了相关分析。结果表明,抽穗-乳熟期间的降水量是影响早稻结实率的最主要气象因子,强降水会显著增加空壳率;空秕率与抽穗后-成熟前10d≥33℃的日最高气温日数成极显著正相关,与连续的低温寡照过程的日数成显著正相关。Based on the data of rice field experiment in Yulin agricultural meteorological experimental station from 2008 to 2018, the relationship between empty grain rate and meteorological factors after heading was analyzed. The results showed that the precipitation during heading and milk ripening was the most important meteorological factor affecting the seed setting rate of early rice;heavy rainfall would significantly increase the empty shell rate. The emptying rate was extremely significantly positively correlated with the number of days that maximum daily temperature was higher than 33℃ after heading and 10 days before maturity, and also significantly positively correlated with the number of days that had continuous low temperature oligophotos.

关 键 词：空秕率 气象因子 降水量 低温寡照 高温热害 

分 类 号：P42[天文地球—大气科学及气象学]