Common single agents are ethephon, corn, ketamine, chlormequat and the like. Although there are many different name modifiers on the market, the above-mentioned single agents or their mixtures account for more than 70% of the corn control products on the market. The application period is selected according to the properties of the chemical control agent, and the height of the lower stem section of the corn is controlled before the jointing, and the height of the upper stem section of the corn is controlled after the jointing. The more commonly used corn chemical control agents are: 1. Maize Zhuangfengling 30% Maize Zhuangfeng Lingshui (100 ml) Main Ingredients: Ethephon, Brassinolide, total active ingredient content 30%, 7-10 days before corn plucking (corn big bell mouth) Late), about 12-13 leaf age, with 25 ml of water to 850 ml (ultra-low volume sprayer), or 20-30 kg of water (kapped sprayer), evenly applied to the top leaves of corn, not sprayed . 2, jade gold 30% water (10 ml), its main components are ammonia fresh fat and ethephon, the total content of active ingredients is 30%. Spraying in the corn field when growing to 6-10 leaves, jade gold can be used once in the lifetime of the corn, and the amount is very small, only 20 ml per acre. When using, a 10 ml of jade gold is added with 15 kg of water and diluted evenly, and the spray is evenly sprayed on the corn leaves. The amount of land per mu is two jade gold. 3. Maize is a compounding agent for plant growth regulators . It is mainly composed of 40% hydroxyethylenolide, chemical components 6-D aminofuran and 2 chloroethylphosphonic acid. 1 (30 ml) per acre is 15-20 kg of water, which can be sprayed once at 5-6 leaves to dwarf the lower part of the plant. However, it is forbidden to apply at 8-10 leaves (ie small trumpet period). Choose a sunny day (9 am or 4 pm) and spray evenly on the upper leaves of the corn plant, only once. 4, ketamine brand name to promote the strong; strong cotton pigment; chemical name: 1,1 ~ dimethyl piperidine chloride. In the large trumpet period of corn, 20-30 ml per mus of ketamine (40 ml) is applied to 40 kg of water. 5, Teng Tian Bao's latest high-tech products can make corn stalks tough, roots developed, anti-reverse ability enhanced, can reduce the ear position and plant height and resist lodging, can reduce empty stalks, spikelets, anti-bald tips, but also Promote early maturity for 2 to 5 days, generally increasing production by more than 15%. In addition, there are Darwin, Vitalin 2, Huakong 2, chlormequat, paclobutrazol, corn, strong and short, 40% ethephon, CommScope 6 (corn anti-reverse), gold inlaid jade, etc. Both have the effect of increasing the yield of lodging. Chemical control agent use precautions 1, the amount of each acre should be strictly in accordance with the instructions on the water. 2, spraying period should be strictly controlled, can not be advanced or delayed, prematurely will inhibit the normal growth and development of the plant, too late will not receive the desired effect. 3, absolutely can not be repeated spray, not even the whole plant spray. 4, the liquid should be used with the use, can not be stored for a long time, and can not be mixed with pesticides , fertilizers, to prevent failure. 5, 4 hours after spraying, it should be re-sprayed in case of rain, and the dose should be halved when re-spraying. 6. Do not smoke, drink or eat when applying. After the work is finished, the skin and contaminated clothing in the hands, face, etc. should be washed in time. 7. The medium-low-yield fields with insufficient fertility or the three types of seedlings that are lacking in seedling replanting, as well as plots with special impact on biomass, cannot be sprayed. More information, all in the pesticide network Led Grow Light For Indoor Plants
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Select the application period according to the properties of corn chemical control agent