大豆科学2026，Vol.45Issue(2)：63-75,13.DOI:10.11861/j.issn.1000-9841.2026.02.0063
播期对大豆花荚期光合碳代谢及产量性状的影响
Influence of Sowing Date on Photosynthetic Carbon Metabolism and Yield Traits of Soybean at Flowering and Podding Stage
摘要
Abstract
To clarify the effects of different sowing dates on photosynthetic carbon metabolism and yield of soybean at the flower and pod stage under water-fertilizer integration cultivation in the second accumulated temperature zone of Heilongjiang Province.field experiments were conducted at Heping pasture using cultivars Henong 71 and Longken 324.Three sowing treatments-early sowing(May 1st),normal sowing(May 10),and late sowing(May 16)-were applied to evaluate their effects on growth stages,agronomic traits,photosynthetic parameters,chlorophyll fluorescence,SPAD values,carbohydrate content,dry matter accumulation,and yield components.The results showed that with the delay of sowing date,the time required by soybean plants from sowing to R3 stage was gradually shortened,but the duration of R3 to R5 stage was gradually increased.Compared with the control,early sowing treatment prolonged vegetative growth period of soybean plants,promoted plant development,increased plant height,nodes number,gas exchange parameters,chlorophyll fluorescence parameters,carbohydrate content and dry matter accumulation,and finally increased the pods number per plant,seeds number per plant,seeds weight per plant,100-seed weight and yield.In 2023-2024,the soybean yield under early sowing treatment was the highest,and the soybean variety Henong 71 and Longken 324 increased by 2.4％-3.5％and 5.5％-5.6％compared with the control.Taken together,when the average temperature of the5 cm soil layer reaches(9.6±0.2)℃within3 days,it is the best sowing time for the second accumulated temperate zone in Heilongjiang Province.This study provides a theoretical basis for optimal sowing date selection of soybean in the second accumulated temperature zone of Heilongjiang Province.关键词
大豆/播期/花荚期/光合碳代谢/产量Key words
soybean/sowing date/flower and pod stage/photosynthetic carbon metabolism/yield引用本文复制引用
刘绍锋,郭天奇,谷翠菊,杨坤,赵强,胡喜平,张玉先..播期对大豆花荚期光合碳代谢及产量性状的影响[J].大豆科学,2026,45(2):63-75,13.基金项目
农业生物育种国家科技重大专项(2023ZD0403205-02) （2023ZD0403205-02）
内蒙古自治区"揭榜挂帅"项目(2023JBGS0006) （2023JBGS0006）
财政部和农业农村部:国家现代农业产业技术体系(CARS-04-PS18). （CARS-04-PS18）
