Paclobutrazol is a plant growth regulator that is inexpensive to use. The application of paclobutrazol in rapeseed fields can have a multiplier effect.
Seedlings applied paclobutrazol for drought resistance. After entering the winter, there is little rainfall, and in the early winter, due to high temperatures, drought may occur, which is detrimental to the growth of rapeseed. When drought occurs, irrigation and drought-resistant methods can be adopted if it is possible to apply irrigation and drought resistance. If it can not be flooded and drought-resistant, it can be combined with water supply, application of paclobutrazol to reduce the number of water-flooding, reduce labor intensity and improve drought resistance. After the application of paclobutrazol in rape seedlings, the roots were developed, the thickening of leaf mesophyll, the increase of chlorophyll content, the succulent succulent leaves, the increase of cell liquid concentration, the strong water absorption, the reduction of transpiration and the stability of cells. Rapeseed to turn green live larvae, after normal growth, acres with 15% paclobutrazol powder 50 g water 50 kg sprayed on the leaves. The use of paclobutrazol can increase drought resistance, but it cannot be done in place of watering. Pay attention to water dripping. What needs to be raised is that paclobutrazol cannot be used during the rapeseed returning period.
Apply paclobutrazol to cold before freezing. January is the lowest temperature period in the year and often occurs below the sub-zero temperature. It has a certain degree of frostbite on rapeseed, especially when the temperature is high before winter, and the dormancy of rapeseed plants is shallow, and the temperature is suddenly cooled at the end of winter, and it is easy to cause serious frostbite. The use of paclobutrazol before winter can significantly improve the cold resistance of the plants. The main manifestations are that the plants are dwarf, the leaves are dark green, the leaves are succulent, the cell fluid concentration is high, the cells are not easy to freeze, the cell stability is good, and the root system developed. At the beginning of January 1992, Xinshao County, Hunan Province was hit by heavy ice weather, the temperature dropped to -7.6°C, and there was no eugenolazole cold injury to grade 2-3, and there were even serious dead seedlings. Generally, when the temperature is high around mid-December, 15% paclobutrazol is used to replenish 50 kg with 70 grams of water, and the plants are sprayed with a solution. Do not use paclobutrazol in the fields of Daejeon.
Live rapid application of paclobutrazol increased branching. Live rapeseeds, especially late sowing rapeseeds, are often high in branching nodes and less branched per plant. However, application of paclobutrazol during the stalk period significantly reduced the branching position of live rapeseed. According to the experiment, paclobutrazol applied in oilseed rape can reduce 4-15 cm of branching sites, increase effective branching by 1.2-1.6, increase the number of pods per plant by 40-60, and increase yield by 10-15 kilograms per mu. In the fine weather of the moss season, 15% paclobutrazol 15% watered 75 kg evenly sprayed.
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