Poinsettia plant type control method

Abstract

The invention provides a poinsettia plant type control method. The poinsettia plant type control method comprises the following steps of 1) spray-applying chlormequat, specifically, 10-15 days after poinsettia seedlings are transplanted, applying primary rooting fertilizer of 1500-time to 2000-time dilution of quick-acting water-soluble fertilizer N-P-K (20-10-20); after every plant comes into 7-9leaves, topping the plants by leaving 4-6 leaves per plant, performing shading treatment for 5-7 sunny days, after lateral buds grow to 2-3 centimeters, spraying 750-time dilution of the chlormequatonce, spraying 500-time dilution of the chlormequat every 15 days; 2) after the poinsettia plants grow for 70-80 days with a plant length of 25-30 centimeters and a crown size of 20-25 centimeters, root-irrigating the plants with 150 milliliters per plant of 15% paclobutrazol of a concentration of 3-5 PPM (parts per million), and then 3-5 days later, performing short daylength treatment. Potted poinsettia cultured through the poinsettia plant type control method can meet high-quality standard and achieve high ornamental value.

Description

technical field [0001] The invention belongs to the field of plant cultivation, and in particular relates to a method for controlling the plant type of poinsettia plants. Background technique [0002] Poinsettia is an evergreen shrub of the Euphorbia family Euphorbiaceae. It is loved by people for its long flowering period, large bracts, and bright colors. It is indispensable in urban landscape flowers and adding festive atmosphere. Good plant type and appropriate crown height ratio are the most important evaluation criteria for high-quality poinsettia potted flowers. When the poinsettia first appeared in the domestic market, especially the northern market, everyone agreed that the plants were tall and big, and the price was relatively high. It is difficult to specify exactly which poinsettia with crown width and plant height is suitable for specific consumers, but many consumers agree that the finished poinsettia should be in harmony with the planting pot, and the proporti...

AI Technical Summary

Problems solved by technology

In terms of using plant growth regulators to adjust the poinsettia plant shape and improve its ornamental value, most of them are treated with a single plant growth regulator, but the plant shape of the poinsettia plant with a reasonable crown height ratio cannot be obtained stably.

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