草甘膦应用于蔗田除草的技术研究

Study on Weed Control Technique for Cane Field with Application of Glyphosate

草甘膦是灭生性除草剂。使用时采用防护措施定向喷施,就能达到有选择地灭除杂草而对作物安全的目的。以一年生杂草为主的地块和蔗田,每亩用草甘膦0.75公斤,兑水30公斤;以多年生杂草为主的地块和蔗田,每亩用1.5公斤,均匀喷药一次,待杂草枯黄或死亡后,不再整地,即可直接开沟或挖穴种蔗,防治效果达95%左右,并对甘蔗发芽生长没有不良影响。苗期用防护装置定向喷洒草甘膦,每亩分别用0.5公斤和1.25公斤,兑水30公斤,对防治一年生和多年生杂草效果达90～95%。用草甘膦进行甘蔗植前化学整地和苗期杂草防除,能及时消灭杂草,省工、省时、省钱,社会经济效益十分显著。

Glyphosate is a nonselective herbicide,it can eradicate many weeds and safety for cane crop by using protective shield during spraying.It controls both annual and perennial weeds at rate 0.75kg and 1.5kg per mu with 30 1/mu spray volume respectively.After the death or yellowing of the weeds, planting furrow can be dug out and cane setts can be planted or planted directly in hills.The efficacy of weed control is about 95%.Glyphosate does not affect the germination and growth of sugarcane.The application rates for annual and perennial weeds during seedling stage are 0.5kg and 1.5kg per mu with 30 1 of water respectively.The efficacy for weed control is 90—95%.Soil preparation after pre-planting chemical control and weed control in seedling stage can eradicate weeds in time and economiz labour, time and cost.The social profit is very outstanding.