Chemical control and anti-fall is a new technology for high-yield cultivation of summer corn. At present, the regulators used in the trial are as follows:
First, corn health
1. Function: The plant can be dwarfed and the stems are thick, generally reducing the plant height by 20-30 cm and reducing the ear position by 15 cm; and increasing the leaf root and increasing the root system, thereby enhancing the plant's resistance to drought and drought. 20% more than the control.
2. Period of use and method: When 1%-3% of the early-developed plants have been bred, 50% of the tassels will be outcropped (using the top of the hand to feel the swelling) is most suitable. Use 1 (30 ml) per acre to 20 kg of water and spray evenly on the top of the corn.
3, note: First, we must master the appropriate period, can not be advanced or postponed. 4-5 days in advance will reduce production by 5%, postponed 4-5 days, the rate of increase is reduced by 5%; the second is to do not re-spray, no leakage, rain within 4 hours after spraying, to reduce the heavy spray.
Second, corn short and full: is a super-concentrated compound preparation, rich in special regulators, amino acids and a variety of trace elements, can inhibit madness, promote root development, enhance photosynthesis, plant stems, leaf thickness, roots Strong, anti-floating, improve pollination rate, make corn cobs large, full of grains, can also inhibit a variety of diseases, can increase production by 20% -35%. When 6-10 leaves of corn are used, 20 ml of water is sprayed with 30 kg of water per acre.
3. Yudele : a special anti-reverse anti-retrogenation agent for corn, which can increase root length, roots and roots, shorten the internode length of stem base, dwarf plant height, increase thick stalk, and greatly improve resistance. The ability to reverse the disease can also prevent disease, drought and stagnation, and generally increase production by more than 30%. At 6-11 leaves, 25 ml of water was applied to the foliage spray per acre.
Fourth, Jindele: a new type of corn special regulator, can shorten the length of the internodes, thicken the straw, dwarf plant height, can reduce the ear position 15-20 cm, and thus resist lodging. Generally, when 7-11 leaves of corn are used, 1 bag (30 ml) per acre is sprayed with 15-20 kg of water.
5. Jade Gold: The latest corn-specific high-tech products can reduce the ear position and plant height and resist lodging. It can reduce empty stalks, spikelets, and anti-bald tips. It can also promote early maturity for 5-7 days, generally increasing yield by more than 20%. . In the case of 6-10 leaves (corn plant height 0.5-1 m), use 2 (10 ml each) to spray 30 kg of water per acre.
6. Chemical Control No. 2: It can make the corn stalk tough, the root system developed, and the anti-reverse ability is enhanced. At the same time, the plant height and the ear position are reduced by 10-12 cm, and the leaves can be rushed to increase the planting density. The yield increase is generally 15 %-30%. Before the booting, use 20% of the chemical control No. 2 25-30 ml per acre and spray 30-40 kg of water onto the top leaves of the plant.
7. Paclobutrazol and auxin: ( 1) Paclobutrazol: Generally in the 5-6 leaf stage, 50 g of paclobutrazol is sprayed with 50 kg of water. (2) Helping the body: In the period of large corn mouth, 20-30 ml per acre is used, and 40 kg of water is sprayed, which generally increases production by 10%. In addition to the several agents introduced above, there are many, such as CommScope 6 (corn anti-reverse special), gold inlaid jade, etc., all have the effect of anti-reverse increase.
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