Cold-resistant agent for brassica rapa L. seedlings and application method of cold-resistant agent

Abstract

The invention belongs to the technical field of agricultural production, and particularly relates to a cold-resistant agent for brassica rapa L. The cold-resistant agent for the brassica rapa L. seedlings is mainly characterized by comprising raw materials as follows: 15-25 mg/L of ABA (abscisic acid) and the balance of water, wherein the purity of the ABA (abscisic acid) is higher than or equal to 99.9%. The cold-resistant agent aims to solve the problem that the brassica rapa L. in the northern cold and arid regions is vulnerable to low-temperature freezing damage, growth of the overground part and the root system of the brassica rapa L. is promoted with chemical control means, especially the thickening growth of roots, the outstanding performance refers to increase of dry matter accumulation, and safe wintering of the brassica rapa L. is guaranteed; meanwhile, permeability (relative electrical conductivity) of leaf cell membranes as well as accumulation of membrane lipid peroxidation malonaldehyde can be reduced, so that the low-temperature freezing degree of leaves of the brassica rapa L. is reduced, the cold resistance of the brassica rapa L. is remarkably improved, and the cold-resistant agent has great practical significance on brassica rapa L. production.

Description

technical field [0001] The invention belongs to the technical field of agricultural production, and in particular relates to a cabbage-type winter rapeseed anti-cold agent. Background technique [0002] Cabbage-type winter rape (Brassica rapa L.) is one of the basic diploid species of Brassica crops. It is early-maturing, cold-tolerant and rich in types. It is one of the three types of rapeseed cultivated in my country. Cabbage-type rape plants are generally shorter, with more developed taproots and medium or well-developed lateral roots. Leaf bases fully clasping. The flowers are light yellow to deep yellow, with round and large petals, which overlap or imbricate when blooming; the buds in the middle of the inflorescence are lower than the open flowers; the anthers dehisce outward. Rapeseed flowers are gorgeous and beautiful, can beautify the environment, have high ornamental value, and are rich in nectar. They are a good source of honey for the development of beekeeping....

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that cabbage-type winter rape is easily damaged by low-temperature freezing in the cold and arid regions of the north, the present invention configures a cold-resistant agent for cabbage-type winter rape, which can reliably and effectively improve the cold resistance of cabbage-type winter rape. Significantly promote the growth of the aboveground and underground parts of rapeseed, especially the thickening and growth of roots, which is prominently manifested as the increase of dry matter accumulation, which provides guarantee for the safe overwintering of rapeseed, and at the same time can reduce the degree of damage to leaves by low temperature and freezing

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