Is a plant growth regulator of paclobutrazol, which has a significant ability to weaken the top of the crop, control morphological differentiation, promote the germination of the plant side buds, promote the formation of flower buds, increase the flower sitting rate, and improve the plant's resistance. When we use paclobutrazol, we need to do the following technical points:
First, the technique of applying paclobutraz is often used in the process of cultivating flowers, such as soil application, soaking, leaf spraying and drying. The most obvious effects are soaking, soil application and leaf spray, which can prolong the effect and stabilize. There are two kinds of techniques for soil application. First, for the planting of the leafy crops in the ground, it is necessary to dig an annular groove about 5 cm deep around the canopy, and then spread the pesticide evenly into the digging trench. And the water is poured without losing the opportunity; the second is the potted flower in the greenhouse, which needs to be watered immediately after the hole is applied in the potting soil. Leaf spray is mostly carried out in the early stage of growth. Different flower, soil and nutrient management levels, their application time and application concentration will not be the same. Spraying technique is usually applied to the fertilizer spraying technique, but it needs attention. Allow the crop's growth point to reach the agent evenly.
Second, the amount of drug administered and the concentration of the drug vary depending on factors such as variety, growing stone, age, and soil quality. The amount of soil applied is usually about 0.25 grams per square meter, the concentration of the liquid used in the leaf spray is 800ppm to 1500ppm, the concentration of the soaking root is 70mg / liter to 90mg / liter, and the soaking time is about 5 Between 8 hours.
Third, the time of administration of the drug is different depending on the application technique. The pesticide network suggests that the soil application should be carried out before the spring flower buds sprout; the leaf spray is usually used when the new shoots grow to about 10 cm to 15 cm. For those deciduous flowers, you can apply them some time earlier to ensure that the effects are exerted in time.
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