恶性杂草麦家公防除药剂室内及田间效果测定

Biological Activity and Field Effect of Herbicides against Lithospermum arvense L.

[目的]采用温室盆栽和田间试验相结合的方法,筛选出对麦家公有较好效果的除草剂。[结果]室内结果表明:光合系统Ⅱ抑制剂(包括异丙隆、辛酰溴苯腈和灭草松)、原卟啉原氧化酶抑制剂(包括唑草酮和乙羧氟草醚)和植物生长素类(包括氯氟吡氧乙酸、2,4-滴丁酯、2甲4氯钠和麦草畏)共9种除草剂对麦家公均有很好的效果。田间试验结果表明:唑草酮、辛酰溴苯腈、双氟磺草胺、苯磺隆冬前冬后施药均有很好的效果。

[Aims] Lithospermum arvense was an important weed in wheat field. In order to screen out the effective herbicides with good effect on Lithospermum arvense. [Methods] The pot experiments and field trial were conducted to evaluate the control effect of 18 herbicides against L. arvense. [Results] The laboratory results showed that photosynthetic system Ⅱ inhibitors （including isoproturon, bromoxynil octanoate and bentazone）, protoporphyrin oxidase inhibitors （carfentrazone-ethyl and fluoroglycofen-ethyl） and hormone-like herbicides （including fluroxypyr, 2,4-D butylate, MCPA-sodium, and dicamba） had best effects to L. arvense. The field results exhibited that carfentrazone-ethyl, bromoxynil octanoate, florasulam, taibenuron-methyl had good effects to L. arvense either before over-wintering or early turning green period.