Uneven-aged mixed plantation method of pine trees and broad-leaved trees

Abstract

The invention discloses an uneven-aged mixed plantation method of pine trees and broad-leaved trees. Suitable mixed plantation trees are selected at places where plants do not survive in a pure pine tree forest according to different site conditions; 1 to 3 types of mixed plantation tree seedlings are randomly planted according to a certain ratio. According to the method provided by the invention, the suitable trees with relatively high economic value are subjected to mixed plantation through utilizing a natural law that part of the plants do not survive in a pine tree forest growth process, and protection and acceleration effects on the broad-leaved trees of the pine trees are expressed, so that the planting survival rate of the broad-leaved trees under the different site conditions can be improved, and the forestation effect of a mixed plantation forest is remarkably improved; the forestation cost of the mixed plantation forest is reduced and the forestation time of the mixed plantation forest is shortened. Practice shows that a masson pine pure forest can be effectively modified into the mixed plantation forest, and the mixed plantation trees adaptive to a masson pine planting region can be selected from castanopsis hystrix, erythrophloeum ferdii, castanopsis fissa and the like. Therefore, the method has relatively strong practicability and operability, has a good popularization and application prospect, and has relatively good economic benefits and ecological benefits.

Description

technical field [0001] The invention belongs to the field of tree cultivation, and in particular relates to a method for mixing pine trees and broad-leaved trees of different ages. Background technique [0002] Pine is the most important fast-growing and high-yielding timber forest tree species in southern China, and has made great contributions to the area of ​​fast-growing and high-yielding timber forests, standing stock and timber production in southern my country. However, the early management of pine plantations was mainly based on timber output, and the management method was pure pine plantation forests, and a large part of the stand structure was poor, the composition of the forest ecosystem declined, the understory vegetation was scarce, and the forest soil was seriously damaged. Compared with the same zone of evergreen broad-leaved forest, the forest has a single landscape, low biodiversity, poor stability, and poor resistance to forest fires and pests and diseases....

AI Technical Summary

Problems solved by technology

[0004] At present, my country has carried out some mixed-breeding experiments between tree species and Pinus massoniana, but they all adopt conventional methods such as inter-row mixed, banded mixed and block mixed, and most of them are mixed with the same age, which causes the mutual influence of mixed forest species, not only The mixed effect has not been achieved, and the growth of the main tree species has been significantly inhibited, the mixed effect is poor, the cost of afforestation is high, and the complementary role of the mixed tree species has not been fully utilized

[0005] In addition, the inventor has shown by the survey results of the pine pine planting and long-term fixed plots for more than 30 years that if the pine pine is planted and does not survive, and then replanted, the pine pine that is replanted grows slowly and cannot catch up with the plants of normal afforestation. It only plays a role in improving the preservation rate, and the replanted plants will not eventually become useful

Images