Rooting agent for softwood cutting propagation of elms

Abstract

The invention discloses a rooting agent for the softwood cutting propagation of elms. The rooting agent mainly comprises indolebutyric acid, 2,4-dichlorophenoxyacetic acid, boric acid and potassium permanganate and is applied to the softwood cutting propagation of ulmaceae tree species, such as white elm, Chinese gold leaf elm and red thorn elm, in a manner that rapid dipping treatment is carried out on the basal portion of a semi-lignified softwood cutting slip of an elm by directly using a stock solution. According to the rooting agent, the cambium cells can be effectively activated, the caluus of an incision can be formed in a short time, the morphogenesis of adventitious roots is induced, the explosive rooting of the rudimentum of the adventitious roots can be prompted, the rooting rate of cutting slips and the survival rate of cutting are remarkably increased, the average rooting rate of the softwood cutting propagation reaches 99%, and meanwhile, the rooting agent has the characteristics of obvious sterilization and disease prevention actions and difficulty in metamorphism in short-term (7-10 days) storage at normal temperature, and the like; and the rooting agent has the advantages of easiness in the purchase of raw materials, low cost, simplicity and convenience in operation, rapidness in dipping, stable effect and capability of being popularized and applied in a large area.

Description

technical field [0001] The invention relates to a rooting agent suitable for twig cutting seedling raising of elm tree, which is mainly used for the seedling raising and multiplication of fine elm family (Ulmaceae) tree species. Background technique [0002] Elm is light-loving, drought-resistant, cold-resistant, barren-resistant, mildly saline-alkali resistant, unselectable soil, strong adaptability, well-developed root system, wind and sand resistance, strong soil retention, good germination, pruning resistance, fast growth, and long life. And the characteristics of anti-pollution and strong ability of dust retention on the leaf surface. It is an important timber tree species, soil and water conservation forest tree species, woody biomass energy forest tree species, urban and rural garden greening tree species and anti-pollution tree species around factories and mines that are naturally distributed in Northeast my country, North China, Northwest China, and East China. How...

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Problems solved by technology

Elm belongs to the tree species that are difficult to take root, adopt currently commercially available rooting agents such as ABT Rooting Powder No. 1-5 (Chinese Academy of Forestry), GGR (Chinese Academy of Forestry), Genbao No. (Sichuan Guoguang Agrochemical Company) etc. to treat elm twig cuttings, only No. ABT2 rooting powder and GGR treatment have a certain effect, but the rooting rate is not very satisfactory, and the treatment time must reach more than 2 hours, which brings a lot of inconvenience to practical application

[0003] Patent No. 2005100456744 "Speed ​​rooting agent for woody plants" is a broad-spectrum rooting agent invented by the applicant for forestry, gardening and other fields. Although it has a high survival rate of cuttings, in practical applications we found that there are still The following defects: 1) poor disease resistance and disease prevention ability; 2) a considerable part of the seedlings survived by cuttings died after transplanting in the next spring; 3) the growth rate is relatively low; 4) the product cost is high; 5) rooting treatment time Longer; 6) short-term storage at room temperature is easy to deteriorate

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