土壤2024，Vol.56Issue(6)：1206-1213,8.DOI:10.13758/j.cnki.tr.2024.06.008
红壤丘陵区玉米鲜食大豆间作的丰产增效和土壤培肥效应
Effects of Corn-Edamame Intercropping Modes on Yield,Efficiency and Soil Fertility in Red Soil Hilly Areas
摘要
Abstract
In order to explore the reasonable corn-edamame intercropping modes in red soil hilly areas,the corn(Zhengdan 958)and edamame(Zhexian 16)were used as experimental materials in 2022,then,four main treatments were set up,including corn monoculture(M),edamame monoculture(S),2 rows of corn and 2 rows of edamame intercropping(2M2S)and 4 rows of corn and 2 rows of edamame intercropping(4M2S).Each main treatment was set up with 3 split treatments,including sowing edamame in 15 days before corn sowing(D1,12 April,2022),simultaneously sowing edamame and corn(D2,27 April,2022),and sowing edamame in 15 days after corn sowing(D3,12 May,2022).The changes in corn yield,edamame yield,edamame protein content,land equivalent ratio,and soil nutrient contents under different treatments were analyzed.The results showed that:compared with S mode,the fresh weight of pods per unit area of edamame under 2M2S was significantly increased by 20.8％.The earlier the sowing,the higher the fresh weight of pods.Both 2M2S and 4M2S were beneficial for improving the land equivalent ratio and economic benefits,their land equivalent ratios were 66％and 40％higher than S,respectively;Their economic benefits were increased by 1.32 times and 61.7％,compared to S.Moreover,the land equivalent ratio and economic benefit under 2M2S were significantly higher than those of 4M2S.The earlier the sowing date,the higher the land equivalent ratio and economic benefit.Compared with S,the protein content of 2M2S edamame was significantly increased,while there was no significant change in protein content among the three sowing periods.Different row ratios and sowing dates mainly significantly affected the contents of soil alkaline nitrogen and available potassium.Compared with M,soil alkaline nitrogen contents under 2M2S and 4M2S were increased by 37.6％and 22.6％,and their soil available potassium contents were increased by 22.0％and 5.4％,respectively.Among the three sowing periods,the earlier the sowing period,the higher soil alkaline nitrogen content.Therefore,in the hilly area of red soil,two rows of corn and two rows of edamame(2M2S)is beneficial for improving soil equivalence ratio,economic benefit,and significantly increasing soil alkaline nitrogen and available potassium contents,and between 12th April and 12th May,the earlier the edamame is sown,the more beneft and soil fertility.关键词
间作/产量/土地当量比/经济效益/土壤养分Key words
Intercropping/Yield/Land equivalent ratio/Economic benefit/Soil nutrient分类
农业科技引用本文复制引用
宋惠洁,秦文婧,李桂龙,刘佳,胡丹丹,吴艳,柳开楼..红壤丘陵区玉米鲜食大豆间作的丰产增效和土壤培肥效应[J].土壤,2024,56(6):1206-1213,8.基金项目
国家重点研发计划项目(2021YFD1901201-05),江西省农业科技攻关项目(JXNK202307-01)和江西省豆类产业技术体系项目(JXARS-24-02)资助. （2021YFD1901201-05）
