Method for increasing cutting propagation coefficients by utilizing nursery stock lateral branches

Abstract

The invention discloses a method for increasing cutting propagation coefficients by utilizing nursery stock lateral branches. The method comprises the steps of step one, selection of tree species: selecting tree species such as aspen, willow, elm and Chinese ash which have more lateral branches and are easy in cutting propagation; step two, preparation and processing of cuttings: selecting lignified lateral branch sections of which the diameter is 0.3 to 1.5 cm on strong nursery stocks of the species which are annual or biennial, cutting the lateral branch sections into cutting shoots of which the length is 6 to 12 cm, and enabling at least one leafbud to be reserved at the top part of each cutting shoot; putting the cut cutting shoots in a GGR6 (Greenplant Growth Regulator 6) solution of which the concentration is 400 to 500 mg.kg<-1> for being soaked for 1 to 2 hours. According to the method disclosed by the invention, limited moisture is enabled to concentrate around nursery stock roots and is not easy to evaporate and disappear, and the problem of water supply difficulty of roots during a nursery stock survival key stage is solved; meanwhile, the competition of weeds on soil moisture and soil nutrient is reduced, an ideal environment is provided for surviving and growing of the nursery stock roots, the forestation survival rate is ensured, and the problems of high forestation irrigation cost and low forestation survival rate in a water-deficient area are solved.

Description

technical field [0001] The invention relates to a seedling cutting propagation technology, in particular to an asexual propagation technology which utilizes seedling side branches to increase the cutting propagation coefficient. Background technique [0002] The propagation of seedlings mainly includes sexual reproduction and asexual reproduction. Among them, cutting is an important means of asexual reproduction of seedlings. Compared with other methods of asexual reproduction such as tissue culture and grafting, cutting propagation technology is simple, easy to master, and the input cost is low. It is more cost-effective economically; therefore, cutting propagation has become the main seedling breeding method for poplar, willow and other afforestation tree species in production at present, but traditional cutting propagation mainly uses the trunk of seedlings or branches of large trees as breeding materials and carries out in the field. , there are problems such as low repr...

AI Technical Summary

Problems solved by technology

[0002] The reproduction of seedlings mainly includes sexual reproduction and asexual reproduction. Among them, cutting is an important means of asexual reproduction of seedlings. Compared with other asexual reproduction methods such as tissue culture and grafting, the cutting propagation technology is simple, easy to master, and the input cost is low. It is more cost-effective economically; therefore, cutting propagation has become the main seedling breeding method for poplar, willow and other afforestation tree species in production at present, but traditional cutting propagation mainly uses the trunk of seedlings or the branches of large trees as breeding materials and carries out in the field. , there are problems such as low reproduction coefficient, low survival rate, large variation in the shape of the breeding seedlings, uneven growth, low seedling rate and emergence rate of the seedlings, which cannot meet the requirements of the project afforestation for the output and quality of the seedlings