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1. Squatting: For the large and long-growing wheat fields, spray 0.15-0.3% chlormequat solution 50-75 kg per acre at the beginning of jointing, which can effectively inhibit internode elongation, dwarf the plant, and thick stem base. Hard to prevent lodging. If mixed with 2,4-d butyl ester, it can also treat broadleaf weeds in wheat fields.
2, to help the strong: in the jointing stage of wheat, 15 to 20 ml per acre, 50-60 kg of water, fully dissolved and sprayed after foliar spraying, can inhibit internode elongation, prevent late lodging, And increase production by 10-20%.
3, petroleum growth agent: petroleum growth agent is a plant growth stimulating hormone, the main component is sodium naphthenate. According to the test, in the period from the flowering to the filling stage of wheat, 1000 kg of oil-promoting agent solution per acre is sprayed, which can prevent dry hot air and increase 1000-grain weight, with an average yield increase of 7.8%.
4, naphthalene acetic acid: before the wheat grout, spray 40 mg / kg naphthalene acetic acid solution per acre 50 kg, can increase 1000-grain weight.
5, fulvic acid: fulvic acid, also known as drought-resistant agent No. 1, is a new plant growth regulator that can enhance the drought resistance of crops. At the booting stage of wheat, 50 grams of drought-resistant agent per acre, 2.5-10 kilograms of water, fully dissolved and then sprayed with ultra-low volume, can reduce the opening angle of the pores on the leaves, increase the water potential of the plant, reduce the transpiration intensity, and strengthen the root system. Vitality, delaying leaf senescence, an average increase of 16.6%.
6. Gibberellin: In the jointing stage of wheat, the spray concentration per acre is 40 mg/kg gibberellin solution 40-50 kg, which can increase the number of kernels and increase the 1000-grain weight.
7. Uniconazole: Uniconazole (code s-3307, trade name 5% wettable powder) is a new type of high-efficiency plant growth regulator with 6-10 times higher biological activity than paclobutrazol. Application on wheat can prevent plant lodging under high-density and high-fertilizer conditions, and has the effect of reducing infertile spikelets and increasing 1000-grain weight; according to the test, the application of uniconazole in the absence of wind or lodging Wheat increased by an average of 15.4% over the control. Method of application: 50 kg of an uniconazole solution having a concentration of 30-40 mg/kg per acre sprayed within 1 week before the jointing of the wheat.
8, plant cytokinin: in wheat jointing stage or heading stage, using plant cytokinin 50 grams, water 200-300 kg, stir well and spray according to the conventional method, can promote the formation of chlorophyll and protein synthesis, enhance Photosynthesis and stress resistance are conducive to early maturity and high yield.
9. Phenoxyacetic acid: In the grain filling stage of wheat, 25 kg of phenoxyacetic acid solution with a concentration of 60 mg/kg per acre can prevent dry hot air and increase 1000-grain weight. (271500 No. 19, Longshan Street, Dongping County, Shandong Province, China)
Source of information: Rural know-how
Application of plant growth regulators in wheat fields
The application of plant growth regulators in wheat can regulate the growth and development of plants, and has the functions of controlling and promoting growth, enhancing stress resistance, increasing grain weight and increasing yield, and is conducive to high quality and early maturity of wheat.
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