云南不同海拔高度籼稻产量差异形成分析  

Analysis of the difference in indica rice yield at different altitudes in Yunnan

作　　者：夏琼梅[1] 岩三胆 卓晓芳 龙瑞平[1] 朱海平[1] 李贵勇[1] 杨久[1] 杨从党[1] XIA Qiongmei;YAN Sandan;ZHUO Xiaofang;LONG Ruiping;ZHU Haiping;LI Guiyong;YANG Jiu;YANG Congdang(Food Crops Research Institute,Yunnan Academy of Agricultural Sciences,Kunming 650200,Yunnan;Xishuangbanna Institute of Agricultural Sciences,Jinghong 666100,Yunnan;Wushan Township Agricultural Comprehensive Service Center of Mile City,Mile 652311,Yunnan)

机构地区：[1]云南省农业科学院粮食作物研究所,云南昆明650200 [2]西双版纳州农业科学研究所,云南景洪666100 [3]弥勒市五山乡农业综合服务中心,云南弥勒652311

出　　处：《浙江农业科学》2025年第1期25-29,共5页Journal of Zhejiang Agricultural Sciences

基　　金：云南省财政部门预算项目重大专项(530000210000000013809);云南省科技计划(202402AE090007)。

摘　　要：以6个籼稻品种为材料,研究云南不同海拔高度对籼稻产量形成的影响。结果表明,海拔降低,籼稻本田生育期日平均温度、日最高温度、日最低温度升高2.4~2.5℃,昼夜温差、日平均湿度和日平均太阳辐射差异较小。海拔降低、温度升高导致籼稻本田生育期缩短,总叶片数减少,孕穗期和齐穗期的高效叶面积指数和总叶面积指数降低,孕穗期至成熟期地上部分群体干物重降低,最终籼稻产量显著降低,从产量构成因素看,主要原因是每穗总粒数减少。该研究为云南地区水稻生产制定合理的栽培调控措施提供依据。Six indica rice varieties were used as materials to study the effects of different altitudes on the yield formation of indica rice in Yunnan.The results showed that when the altitude decreased,the daily average temperature,daily maximum temperature and daily minimum temperature during the growth period of indica rice increased by 2.4-2.5℃,and the differences between day and night temperature,daily average humidity and daily average solar radiation were small.The lower altitude and higher temperature led to the shorter growth period,the decrease of the total number of leaves,the decrease of the efficient leaf area index and the total leaf area index at the booting stage and the full heading stage,and the decrease of the dry matter weight of the aboveground part of the population from the booting stage to the mature stage,and finally the yield of indica rice was significantly reduced.This study provides a basis for formulating reasonable cultivation and reglation measure for rice production in Yunnan Province.

关 键 词：籼稻 海拔高度 气象因子 产量差异 

分 类 号：S511[农业科学—作物学]