Corn Chemical Control Technology
In recent years, the high yield of corn dense varieties has been recognized by the majority of farmers. The corn varieties selected by farmers are generally dominated by high-yielding, dense-seed varieties, and they have achieved higher yields to a certain extent. However, the production process also brought problems such as serious corn lodging, many empty rods, long baldness, and serious diseases and insect pests. I. Problems that often arise after high-density planting of corn 1. The plant shape is higher than the normal plant height, and the site of the head of the plant is increased, forming a large head sinking, easy to fold and fall. 2. With the increase of plant height, a variety of nutrients are wasted, so that most of the fertilizers supply vegetative growth. Insufficient nutrients in the reproductive growth stage of spikelet florets in the maize spikelets or lack of sufficient nutrients in the drum grain stage results in small spikes. The phenomenon of grain defects. 3. In the case of high density, vegetative growth is strong, hindering reproductive growth, delaying the ear silking time of the ear of the corn, shortening the pollination time, causing unbalanced male and female sex, resulting in baldness and reduced seed setting rate. The growth period is prolonged, and empty stalks are formed in severe cases. 4. In the case of high density, due to the mutual obstruction of the corn leaves, it is difficult for the pollen to meet with the filaments, resulting in poor seed setting rates such as "hob ears" and "half scoops". 5. The large density of the corn causes poor ventilation and light transmission. The field is covered with turbid vegetation and the stem is soft and susceptible to various pests and diseases. 6. In the middle and late stages of corn growth, there are frequent storms, and the increase in planting density often results in a series of problems such as the lodging of corn. These have become serious obstacles to the high yield and stable production of corn. Second, an effective way to solve the problem In addition to the above-mentioned problems such as corn lodging and other issues related to the amount of fertilizer and the type of fertilizer, the most important influencing factor is corn density and plant height, so dwarfing must be performed. The application period was selected according to the properties of the chemical control agent, and the height of the lower corn stem section was controlled before the jointing, and the height of the upper stem section of the corn was controlled after the jointing. The more commonly used corn control agents are: 1. Maize Zhuang Feng Ling: 30% corn Zhuang Feng Ling agent (100 ml), 7-10 days before corn tasseling (maize big bell mouth late), about 12-13 leaf age, mu 25 ml with water 850 Ml (ultra-low volume sprayer), or watered 20-30 kg (knapsack sprayer), evenly applied to the top of the corn leaves, can not spray the whole plant. 2. Jade gold: 30% water solution (10 ml), spray when 6-10 pieces of corn leaves, jade gold can be used once in the life of corn, and the amount is very small, as long as 20 ml per mu. When used, the sprayer is used to evenly spray the liquid on the corn leaves. 3. Maize robustin: It is a kind of plant growth regulator compounding agent, 1 (30 ml) per mu watered 15-20 kilograms, sprayed once in 5-6 leaves, dwarfed plant lower part. . However, it is forbidden to apply pesticides on 8-10 leaves (ie, the small bellmouth). Choose sunny days (9 am or 4 pm), spray evenly on the upper leaves of the corn plants and spray only once. 4. Diclocamine: the name of the product is to help the prime; strong cotton prime; Chemical name: 1,1-Dimethylpiperidine chloride. During the big bell-mouth period of maize, 20-30 ml of dilute-saltamine (chicken auxiliaries) was used per mu and sprayed with 40 kg of water. 5. Darwin: a multi-component compound plant growth regulator, a bag of 60 grams per acre, first dissolve the drug with a small amount of warm water, and then watered 15-20 kg, even when the leaves in the corn 11-12 leaves visible Spray on the upper leaves of the plant and spray only once. 6. Chemical control No.2: can make corn stem tough, developed roots, increased lodging resistance, while reducing plant height and ear position 10-12 cm, can also make the blade flush, increase the planting density, the increase rate is generally 15 -20%. Before the booting, 20% of the chemically controlled No. 2 25-30 ml per mu was sprayed onto the top leaves of the plants with 30-40 kg of water. 7. Chlormequat: 50% water agent, chemical name 2-chloroethyl-trimethyl ammonium chloride. Use 30 grams of CMC per acre and spray 30 kg of water to spray the top leaves of the corn plants. 8. T TABLET: The latest high-tech products can make corn stalks tough, developed roots, increased resistance to lodging, can reduce the ear position and plant height and resist collapse, can reduce empty stalks, spikelets, anti-alopecia, also Can promote 2-3 days of precocious maturity, generally increase production by more than 15%. In addition to the several agents described above, there are many Sarms Powder,Andarine,Yk11,Ostarine Shaanxi Hongbaiyi Biotech Co., Ltd. , https://www.sxhongbaiyi.com