How to prevent the "Cao Cao" Aconite
Cyperus punctatus consists of underground tubers, rhizomes, bulbs, and aboveground stems and leaves. Tubers, rhizomes, bulbs, and seeds can all reproduce. In the growing season of weeds, seedlings can emerge in 2 to 3 days. When conditions are suitable, both seeds and rhizomes can germinate and produce new plants or tubers. The new tubers sprout young grasses, and one plant follows the other and grows continuously. If it is a control that does not remove the roots, even if it is not on the ground, the underground part will continue to grow, and the height of the original plant will be reached in about 7 days. Due to the special difficulty in removing tuber roots, the key to controlling the aconite roots is to kill the roots. The best period for controlling the aconite removal is flowering before weeding, because of the high lignification level of the weeds after flowering and flowering, and the poor ability of conduction and absorption. At this time, a large amount of weeds will be needed to have better control effect. Suitable for the cotton field control agent removal of aconite are: (1) trifloxysulfuron. Syngenta developed and developed the cotton field. When the cotton seedlings were 20-30 cm, the active ingredient was 1.5-2 g/mu, 30 kg of water, and directed semi-directional spray with little or no phytotoxicity. More than 2.5 grams of active ingredient per acre is sprayed on the top leaves of cotton plants, and it is easy to produce phytotoxicity when the disease is weak and the adverse climate conditions are met. (2) Glyphosate isopropylamine salt. In the vigorous growth period of cotton, Cyperus rotundus is dominated by tuber propagation, and the density of weeds is large, and weeding and weeding can not be carried out. It is possible to use 41% glyphosate isopropylamine salt, 200 ml of water, and 15 to 20 kg of water to make up liquid medicine. Apply smear to the stems and leaves of the aconite plant with a brush to allow it to absorb and transmit. The tuber is rotted and extinct. In actual production, chemical control and agricultural control can be combined to achieve the goal of eradicating aconite roots to save manpower and material resources. The methods of agricultural control are: Firstly, a piece of land where tuber propagules are concentrated but mainly tuber propagation is combined with cultivated land or cultivating loose soil, artificially picking up the tubers of aconite roots from the soil, and drying out in the field for burning or medicinal purposes; It is the flowering and seeding stage of the adult Aconite from July to August (before immature seeds), the whole plant is removed or the stems and inflorescences of the above ground parts are cut off, the seeds are dropped, and the seed breeding is reduced to reduce the harm. LED Batten Fittings Strip Light,LED Batten Light Fittings,LED Batten Fitting 60W Ningbo Wellway Optoelectronic Technology Co.,Ltd , https://www.wellwayopto.com