摘要
采用盆栽试验研究了豌豆、玉米单作及豌豆/玉米体系中接种根瘤菌(不接种、接种XC3.1、接种ACCC16101)及施氮量(不施氮、施氮0.3 gN/kg土)对豌豆、玉米生长及其氮素营养状况的影响。结果表明:接种XC3.1显著提高了豌豆的有效根瘤数量和重量,单作平均分别提高79.5%和131.6%,间作平均分别提高174.1%和205.4%;XC3.1对复合体系中玉米及两种种植模式下豌豆氮素营养状况的改善作用优于ACCC16101;接种XC3.1对两种种植模式下豌豆的生长以及不施氮条件下复合体系中玉米的生长均具有促进作用,豌豆、玉米的生物量平均提高22.0%和123.1%;复合体系中豌豆的有效结瘤状况均优于相应的单作;接种与否,间作豌豆的生物量均小于相应供氮水平下的单作,平均降低13.7%;接种XC3.1不但强化了复合体系中玉米的竞争力,而且豌豆对玉米的竞争抵抗力也明显提高。
A pot experiment was conducted to investigate the effects of nodule bacteria inoculation（Non-inoculation,Inoculating XC3.1,Inoculating ACCC16101） and N application levels（Non-N,0.3 gN/kg soil） on pea and maize growth and N content in different cropping patterns（pea and maize sole,pea/maize intercropping）.The results showed that inoculating selected strain XC3.1 increased effectively nodules number and weight by 79.5%～131.6% and 174.1%～205.4% respectively,and improved N nutrition status of intercropped maize and pea in two cropping patterns.The improvement of N nutrition resulting from XC3.1 was better than that from strain ACCC16101.Inoculating XC3.1 promoted pea biomass in mono-and intercropping system by 22.0%,so did intercropped maize under non-N applying condition by 123.1%.More effective pea nodules were formed in intercropping system than that in mono-cropping system.Intercropped pea accumulated less dry matter than mono-cropped pea at the same N level,and the average rate of decrease was 13.7%.Inoculating XC3.1 increased significantly not only the competition of maize to pea,but also the resistance of pea to maize.
出处
《干旱地区农业研究》
CSCD
北大核心
2010年第5期92-96,103,共6页
Agricultural Research in the Arid Areas
基金
"十一五"国家科技支撑计划项目(2007BAD89B17)
甘肃省自然科学基金(3ZS061-A25-079)
关键词
接种
根瘤菌
豌豆
玉米
根瘤
氮
inoculation
nodule bacteria
pea
maize
nodule
nitrogen
