Studies On The Applied Technology Of Quinclorac In Cornfield

The main POint of this Pape is aboLIt the conbol1ing of weed in cornfield. ms trial tried touse wt1ofac into cowheld to conbol bamytws and studied the aPplicallon of quincloracin comfield by potted plant triaJ and field experimen. In addihon, the optiInaJ combinationand the aPplied W of M composihon to control weed in cornfield were foUn bymultiple-comPOsihon roboonal reposion design teStThe potted plan trial studied the persistence of quinclora. the absorpion seCtion ofquinclorac and the rebonShip betwen effeCt of controlling bamytw and conCenthaon ofwatet Result: (l ) the persiAnce of quinclorac against barntw can be uP to 2an5days: (2) the absorPtion seCtion for the use ofquinclorac in bamtw is the whole edn.in which mord than 50% was stIajn above the hodrin, which is the maor Part for allsothingquinclorac: (3 ) the test in Which the volume of Wate was 300L/hIn2 was the bes for the effeCtof control1ing bamwts, indicating that sMle concenthaon of water is very irnPOrtanfor the effectS of quinclorac used in comfield.Field trial was cAned out in NEAU eXperimental field in 2(X)l, including the studies on therelationship between differet methods of using quinclome and the ethetS. on the effects ofquinclorac in comfield using it alone, and on the optimal comPOsition ofquinclorac. MCPAand ler. The result showed tha: (l ) the effect of POst emeopnce theatment is re1allvelybetter than pre-emeIgene beatInent: (2) wtlorac has no bad effeetS on the growth andProducion of com whe the doses were between 300 and 1200 g ai/hIn durin the 2to lcavsperiod of corm: (3)the optiInal choices for the effee of quinclorac were from 900 to 1200 gai/hm2 doses during the 3~5 leaves of barnyardgraSS, the effects of weed control1ing arebeyond 89%: (4) multiple composition ofquinclome. MCPA and rtine can control most ofweeds selectively durin the 3- leaves Period of corn, in Which twlome played a maorrole, and MCPA was the second. Using method of rotational regression design. thecomPrehensive model of quinclona. MCPA and theine was deVloPed, the oPtiInalproPOtrion of the be herbicides is 1 t4.9t6: and the range of different comPOsitions were:201--249g ai/hIn2 for quinclome. 643~7l3 g ai/hIn2 fOr MCPA and 827867 g tw fortheine. The doses of the other tWo herbicides can be reduced sighficantly, espeCial1y theamoUn of wte. By the effect of MCPA, which is very twrtan to reduce the residues ofathan in soil.