摘要
选用南丰国家农业气象观测一级站1990—2018年双季晚稻发育期观测资料和平行观测气象资料,使用Excel图表、线性气候倾向率、相关分析等方法,分析双季晚稻生育期对气候变化的响应。结果表明,南丰县双季晚稻生育期间(6—10月)平均气温、平均最高气温、平均最低气温随年际变化升高;双季晚稻播种、出苗、三叶期随年际变化正相关极显著,齐穗、乳熟两生育期随年际变化负相关显著,成熟期和双季晚稻全生育期(播种至成熟)天数随年际变化负相关极显著;双季晚稻移栽、分蘖两生育期与早稻移栽、齐穗两生育期线性正相关极显著;双季晚稻分蘖、孕穗、齐穗、乳熟、成熟等生育期与7月下旬平均最低气温线性负相关极显著,孕穗、齐穗、乳熟、成熟期及双季晚稻全生育期天数与7月下旬+8月上旬+9月下旬平均最低气温线性负相关极显著,成熟期及全生育期天数与9月下旬平均气温线性负相关极显著。
Based on the observation data of double cropping late rice development period from 1990 to 2018 at Nanfeng National Agrometeorological Observatory I and parallel observation meteorological data,the response of growth period of double-cropping late rice to climate change was analyzed by using Excel chart,linear climatic tendency rate and correlation analysis.The results showed that during the growth period of double cropping late rice in Nanfeng County(June-October),the average temperature,the average maximum temperature and the average minimum temperature increased with the years.The growth stages of double-cropping late rice,such as sowing,seedling emergence and trifoliate,were positively correlated with interannual changes.There was a significant negative correlation between full heading and milky ripening stages with interannual changes.There was a significant negative correlation between the maturity growth period and the whole growth period(sowing to maturity)days of double-cropping late rice.The linear positive correlation between the two growth stages of double-cropping late rice transplanting and tillering and the two growth stages of early rice transplanting and full heading was very significant.The growth stages of late rice such as tillering,booting,full heading,milky stage and ripening were negatively correlated with the average minimum temperature in late July.The days between booting,full heading,milky stage,ripening and sowing to ripening of double-cropping late rice were negatively correlated with the average minimum temperature in late July+early August+late September.The linear negative correlation between the days of maturity and whole growth period and the average temperature in late September was very significant.
作者
何寿仁
涂婷
HE Shou-ren(Meteorological Bureau of Nanfeng County,Nanfeng,Jiangxi 344500)
出处
《农业灾害研究》
2019年第5期68-69,106,共3页
Journal of Agricultural Catastrophology
关键词
南丰县
双季晚稻生育期
气候变化
响应
Nanfeng County
Growth period of double-cropping late rice
Climate change
Response
