Study Technology And Effect Of Herbicides And Nitrogenous Fertilizers In Wheat Fields

This paper, by two factor randomized block design, studied experimental scheme with herbicide(2,4-D butylate and MCPA, each set up 5 level ) and nitrogenous fertilizer (carbamide, set up 5 level). In this paper safety aspects on the winter wheat and herbicides performance of wheat field weeds were carried on. Morphological and physiological indicators of the winter wheat were determined and analyzed, such as crop height, spike long, leaf area, the content of chlorophyll, photosynthesis rate, level of nitrate reductase, level of SOD and so on. Furthermore, wheat yield and wheat field weed preventive and killing were investigated. Thereby, safe and high effect scheme with herbicide and fertilizer mixed using were sifted. The result indicated that, 2,4-D butylate and carbamide, MCPA and carbamide were mixed using in wheat field between return green period and draw blur period. In general, under the safety aspects of wheat, improved yield and the effect of wheat field weed preventive and killing, the optimization scheme was: 2,4-D butylate (100～150ml/667m2)+ carbamide(22.5～30kg/667m2)and MCPA (100～150g/667m2)+ carbamide(22.5～30kg/667m2).