不同光谱及其组合对马铃薯干物质积累和分配的影响  

Effects of different spectra and their combinations on dry matter accumulation and distribution in potato

作　　者：许建民[1,2] 颜志明 史培华[1] 仇学文 XU Jian-min;YAN Zhi-ming;SHI Pei-hua;QIU Xue-wen(Jiangsu Vocational College of Agriculture and Forestry,Jurong 212400,China;Engineering and Technical Center for Modern Horticulture,Jurong 212400,China)

机构地区：[1]江苏农林职业技术学院,江苏句容212400 [2]江苏现代园艺工程技术中心,江苏句容212400

出　　处：《江苏农业学报》2020年第1期32-38,共7页Jiangsu Journal of Agricultural Sciences

基　　金：江苏农林职业技术学院院级课题(2016kj002);江苏高校“青蓝工程”项目

摘　　要：以马铃薯品种转心乌为试验材料,研究纯蓝光、蓝光∶红光=1∶3、蓝光∶红光=1∶5、蓝光∶红光=1∶7和纯红光5种不同光谱对马铃薯农艺性状及干物质积累和分配的影响,运用Logistic模型对马铃薯干物质积累进行拟合,分析比较了模型的关键参数。结果表明,红光可以有效促进马铃薯株高和茎粗的增加;马铃薯整株干物质和块茎干物质积累,依次为蓝光∶红光=1∶7>蓝光∶红光=1∶5>纯红光>蓝光∶红光=1∶3>纯蓝光;马铃薯整株和块茎干物质的积累遵循Logistic生长规律,呈明显的倒“S”形,结薯基本都在改变光周期之后;蓝光∶红光=1∶7处理干物质积累的增长持续时间(△t)和平均积累速度(V mean)在所有处理中最高,块茎干质量与根+茎+叶干质量的差值最大。综合分析认为,光谱成分的变化可以显著影响马铃薯干物质的积累与分配,蓝光∶红光=1∶7组合是马铃薯设施栽培条件下较适合光源。Using the potato variety zhuanxinwu as the test material,effects of blue light,blue-red light(1∶3),blue-red light(1∶5),blue-red light(1∶7)and red light.On the agronomic traits and dry matter accumulation and distribution of potato were studied.The logistic model was used to fit the dry matter accumulation of potato,and the key parameters of the model were analyzed and compared.The results showed that red light could effectively increase the plant height and stem diameter of potato.The whole plant dry matter and tuber dry matter of potato followed the order of blue-red light(1∶7)>blue-red light(1∶5)>red light>blue-red light(1∶3)>blue light.The accumulation of potato whole plant and tuber dry matter followed the logistic growth law and showed a distinct inverted“S”shape.In addition,the tuber formation basically occurred after changing the photoperiod.The growth duration(△t)and average accumulation rate(V mean)of dry matter accumulation were highest under the treatment of blue-red light(1∶7),and the difference of dry weight between tuber and the root+stem+leaf was the largest.According to the comprehensive analysis,the changes of spectral composition can significantly affect the accumulation and distribution of dry matter in potato.The blue-red light(1∶7)is the suitable light source for protected cultivation of potato.

关 键 词：马铃薯 光谱 干物质 积累 分配 

分 类 号：S532[农业科学—作物学]