山西农业大学学报（自然科学版）2023，Vol.43Issue(6)：52-61,10.DOI:10.13842/j.cnki.issn1671-8151.202308018
间作对高粱光合特征及物质生产的影响
Effects of intercropping on the photosynthetic characteristics and biomass production of sorghum
摘要
Abstract
[Objective]In order to explore the benefits of intercropping grass crops with legumes,this study focused on the sor-ghum-peanut intercropping system.The objective was to determine the optimal row ratio for sorghum-peanut intercropping and to reveal the mechanism contributing to increased yield.[Methods]This study spanned two consecutive years,from 2021 to 2022,using sorghum variety Liaonuo 11 and peanut Jinhua 15 as the test materials.Intercropping row ratios were set at 4:4 and 8:4,with sole cropping as the control.The study aimed to determine and analyze differences in biotic traits,light energy use characteristics,material production capacity,and yields of sorghum and peanut across various intercropping row ratios.[Re-sults]Over the two-year experimental period,sorghum and peanut intercropping significantly improved sorghum's population traits,photosynthesis,and biomass production capacity.Notably,this was evident in reduced plant height,increased stem di-ameter,dry matter of per plant,and yield.The biotic traits of sorghum were most favorable in the 4:4 sorghum-peanut inter cropping,where plant height decreased by 4.56％to 6.21％,and stem thickness increased by 5.95％to 11.43％.The high-est yields reached 11 202.34 kg·hm-2(2021)and 11 790.64 kg·hm-2(2022),marking a 32.40％and 34.14％increase com-pared to monocropping,with a 3.39％to 10.59％rise in thousand kernel weight and a 5.51％increase in spike weight.Addi-tionally,the highest dry matter accumulation of 377.59 g·plant-1 per plant was recorded,marking a 22.86％increase;The net photosynthetic rate was noticed an 11.81％to 13.35％increase,transpiration rate increased by 18.58％to 53.27％,stomatal conductance increased by 25.57％to 53.96％,inter-cellular carbon dioxide concentration decreased by 15.30％,sorghum seed light energy utilization increased by 31.25％to 34.48％,and biological yield light energy utilization increased by 22.65％(2022).[Conclusion]Sorghum and peanut intercropping demonstrated high land use efficiency,with sorghum as the predomi-nant crop in this system.Optimal intercropping row ratios improved sorghum canopy structural characteristics,increased photo-synthetic capacity,and light energy utilization,establishing a solid foundation for dry matter accumulation and yield.The 4:4 in-tercropping ratios showed the best overall performance across the studied parameters.关键词
高粱/间作/产量/光能利用/干物质Key words
Sorghum/Intercropping/Yield/Light energy utilization/Dry matter分类
农业科技引用本文复制引用
刘思彤,张东娟,许锦,裴大顺,王佳旭,韩博,董建新,李亚军,滕达..间作对高粱光合特征及物质生产的影响[J].山西农业大学学报（自然科学版）,2023,43(6):52-61,10.基金项目
国家谷子高粱产业技术体系(CARS-06-14.5-B17 （）
CARS-06-14.5-A22) （）
