Crop application of plant growth regulators can regulate the growth and development of plants, and has multiple effects such as controlling and promoting growth, enhancing stress resistance, increasing grain weight, increasing yield, and facilitating high quality and early maturity. Proper and reasonable use of growth regulators to grow crops can yield good benefits.
1. Promote the body: In the jointing stage of wheat, 15 to 20 ml per acre of fertilization, 50-60 kg of water on the foliar spray, can inhibit the inter-segment elongation, prevent late lodging, and increase production by 10 to 20%.
2. Chlormequat: For the large and long-growing wheat fields, the spraying of 0.15-0.3% chlormequat solution 50-75 kg in the early stage of jointing can effectively inhibit the internode elongation, make the plant dwarf, and the stem base is thick. Hard, thus preventing lodging; if mixed with 2,4-D butyl ester, it can also treat broadleaf weeds in wheat fields.
3. Phenoxyacetic acid: In the grain filling stage of wheat, 25 kg of 60 ppm phenoxyacetic acid solution is sprayed in a mu, which can prevent dry hot air and increase 1000-grain weight.
4. Naphthaleneacetic acid: Before the wheat is grouted, 50 kg of 40 ppm naphthalene acetic acid solution can be sprayed per mu, which 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 kg of water, fully dissolved and then sprayed with ultra-low volume, can reduce the opening angle of the pores on the leaves, increase plant water potential, reduce transpiration intensity, and enhance root system. Vitality, delaying leaf senescence, an average increase of 16.6%.
6. Uniconazole: Uniconazole (code S-3307, commercially available as 5% wettable powder) is a novel high-efficiency plant growth regulator with a biological activity 6 to 10 times higher than that of 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. Application method: Within a week before the jointing of wheat, 50 kg of 30-40 ppm of the uniconazole solution was sprayed per mu.
7. Gibberellin: In the jointing stage of wheat, 40-50 kg of 40ppm gibberellin solution can be sprayed, which can increase the number of kernels and increase the 1000-grain weight.
8. Plant cytokinin: In wheat jointing stage or heading stage, plant cytokinin 50g, water 200-300 kg, stir well and spray according to conventional methods, can promote the formation of chlorophyll and protein synthesis, enhance Photosynthesis and stress resistance are conducive to early maturity and high yield.
9. Petroleum Enhancer: The petroleum booster is a plant growth stimulating hormone and its main component is sodium naphthenate. According to the test, in the period from the flowering to the filling stage of wheat, the injection of 1000 times of the oil-promoting agent solution of 50 kilograms per mu can prevent dry hot air and increase the weight of 1000-grain, with an average yield increase of 7.8%.
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