当前位置: 首页 > 文章 > 5种土壤处理用除草剂对紫花苜蓿-根瘤菌共生固氮的影响 山东农业大学学报(自然科学版) 2007,38 (1) 42-45
Position: Home > Articles > INFLUENCE OF FIVE HERBICIDES ON RHIZOBIUM-ALFALFA SYMBIOTIC NITROGEN-FIXATION Journal of Shandong Agricultural University(Natural Science Edition) 2007,38 (1) 42-45

5种土壤处理用除草剂对紫花苜蓿-根瘤菌共生固氮的影响

作  者:
王利平;王金信;孙艾蕊;鲁梅;刘淑华
单  位:
山东农业大学植物保护学院
关键词:
除草剂;紫花苜蓿;根瘤菌;共生固氮
摘  要:
温室内测定了5种土壤处理除草剂:咪唑乙烟酸,异恶草酮,乙草胺,仲丁灵和氟乐灵对紫花苜蓿鲜重、干重、结瘤和总含氮量的抑制作用。其中以咪唑乙烟酸和异恶草酮的抑制作用为最强,乙草胺和仲丁灵的抑制作用次之,氟乐灵抑制作用最小。咪唑乙烟酸在用量为33.8a.i.g/hm~2时对紫花苜蓿的鲜重抑制率和干重抑制率分别为67.2%和65.3%,氟乐灵在用量为450a.i.g/hm~2时对紫花苜蓿的鲜重抑制率和干重抑制率分别为33.0%和33.3%;与对照植株的结瘤率和总含氮量分别为90.1%和4.2%相比,咪唑乙烟酸用量为33.8 a.i.g/hm~2处理时,紫花苜蓿结瘤率和含氮量分别为为33.1%和2.3%,氟乐灵为450 a.i.g/hm~2处理时,紫花苜蓿结瘤率和含氮量分别为76.0%和3.1%。
译  名:
INFLUENCE OF FIVE HERBICIDES ON RHIZOBIUM-ALFALFA SYMBIOTIC NITROGEN-FIXATION
作  者:
WANG Li-ping WANG Jin-xin~* SUN Ai-rui LU Mei LIU Shu-hua (College of Plant Protection,Shandong Agricultural University,Tai'an 271018,China)
关键词:
Herbicides;;Alfalfa;;Rhizobium;;Symbiotic nitrogen-fixation.
摘  要:
The inhibitory effects of 5 herbicides:imazethapyr,clomazone,acetochlor,butralin and trifluralin on rhizobium-alfalfa symbiotic nitrogen-fixation were studied in greenhouse.The results revealed that:ima- zethapyr and clomazone had the strongest inhibitory effects,trifluralin had the lest inhibitory effects.At the dosage of 33.8 a.i.g/hm~2,imazethapyr reduced respectively fresh weight and dry weight by 67.2% and 65. 3%,trifluralin,at the dosage of 450 a.i.g/hm~2,reduced respectively fresh weight and dry weight by 33.0% and 33.3%;nodulation rate and total nitrogen content of alfalfa without herbicides were respectively 90.1% and 4.2%,at the dosage of 33.8 a.i.g/hm~2,imazethapyr reduced respectively nodulation rate and total nitro- gen content by 33.1% and 2.3%,while trifluralin,at the dosage of 450 a.i.g/hm~2,reduced respectively nodulation rate and total nitrogen content by 76.0% and 3.1%.

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