A kind of photoinsensitive kenaf seed production method

Abstract

The invention relates to a seed production method for day-neutral kenaf. The seed production method includes the steps that a suitable day-neutral kenaf variety is selected, sowing time is designed according to photo-thermal conditions in different regions of the South, and water solutions prepared from mepiquat chloride, triiodobenzoic acid, boric fertilizer, monopotassium phosphate, 2,4-D, salicylic acid, gibberellins and other chemical substances by different ratios are sprayed at 7-10 days after seedling emergence, in the early stage of vigorous growth, the middle stage of vigorous growth and squaring stage respectively to regulate growth. By implementing the method, the growth and development process of day-neutral kenaf can be shortened by 5-10 days, the plant height is reduced below 3.5 m, 80% of flowers are concentrated within 50 cm portions of treetops, the seed yield is increased by 10% or more, and the fertilizing amount is smaller than local recommended fertilizing amount by 5-10%.

Description

technical field [0001] The invention belongs to the technical field of crop seed production, and in particular relates to a method for producing light-insensitive kenaf seeds. Background technique [0002] Kenaf (Hibiscus cannabinus L.) is an annual herb of Malvaceae Hibiscus genus, and is an important bast fiber raw material. In my country, kenaf is mainly planted in the Huang and Huaihe River basins, most of which are summer hemp (wheat stubble hemp), that is, after wheat is harvested in early and mid-June, kenaf is replanted in rotation. At this time, the light duration changes from long to short, and short-day conditions appear. Kenaf is a short-day crop, and conventional kenaf is sensitive to changes in light length, and it is easy to promote budding and flowering under short-day conditions. However, the purpose of kenaf is to harvest the vegetative body—bast fiber, and premature flowering leads to the transformation of kenaf from vegetative growth to reproductive gro...

AI Technical Summary

Problems solved by technology

Some studies have conducted research on the application of salicylic acid, triiodobenzoic acid and other chemical substances in crops such as soybeans, sunflowers, and Chinese medicinal materials to remove apical dominance, induce flower bud differentiation, and flowering. It is generally believed that appropriate concentrations can promote flower increase, However, due to the different concentrations, crops, regions and other factors, no unified conclusion has been drawn, and there is no related research on the impact of kenaf, and there is no exploration of the synergistic effect of multiple chemical substances

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