Studies On Safety Aspects And Performance Of Herbicides-fertilizer On Linseed

Linseed is one of the main oil plants ,but the techniques of herbicides haven't developed well. This paper studied applicative techniques of seven herbicides such as Chlorsufuron, MCPA, acetochl, trifluralin, prometryne, clethodim,Haloxyfopmethy mix with or without fertilizer employed to soil on linseed by single factor completely random design. In this paper, safety aspects on the linseed and defend effect on weeds were carried on by pot experiments. The results indicated that: 1.Of the soil dealing herbicides in the normal dosage trail, MCPA and acetochl have little influence on the rate of linseed's emergence . MCPA and prometryne have little influence on linseed's height and weight; they also have a better defend effect on simulate weeds millet and cole. MCPA's emergence and weight defend on millet can get 85.28% and 87.51%, prometryne's emergence and weight defend on cole can get 72.79% and 84.09%. 2.In the trail of herbicides mix with fertilizer, except Chlorsufuron, MCPA and acetochl, trifluralin and prometryne are safe on linseed's emergence, crop height, weight,ect, and have better defend effect on millet and cole. Among them, trifluralin herbicides-fertilizer(150ml/667m2 + (NH4)2HPO4 20kg/667m2), prometryne herbicides-fertilizer(12g/667m2 + (NH4)2HPO4 20kg/667m2)'s control of emergence on broadleaf weeds upwards of 64%, fresh weight upwards of 66%. MCPA herbicides-fertilizer, acetochl herbicides-fertilizer, trifluralin herbicides-fertilizer's control of emergence on gramineous weeds got 83%, fresh weight got 86%. 3. Of the leaf dealing herbicides with the normal dosage trail, MCPA and prometryne have no marked restrain on linseed's growth. MCPA for leaf dealing got a emergence control and fresh weight control on cole 80% and 89.4%, prometryne on millet 93.4% and 96.9%. All these have a good effect on weeds control.