Method for increasing survival rate of seedlings under phoebe bournei forest

Abstract

A method for increasing the survival rate of seedlings under a phoebe bournei forest includes the following steps of firstly, digging pits and filling the pits with foreign soil; secondly, conductinggermination accelerating and sowing; thirdly, conducting weeding and earthing; fourthly, conducting seedling management. Soil preparing and pit digging are conducted in a sparse area in a phoebe bournei natural forest stand, backfilling is conducted with the foreign soil, the allelopathic inhibition effect of the soil in the original forest stand is avoided, the growth of newly-planted seedling root systems is promoted, the soil surface is 3-5 cm away from the edge of each soil pit during foreign soil backfilling, the root systems are protected against the influences of the drought of the summer and autumn soil surface layer by means of the later-period foreign soil coverage, and the survival of seedlings is ensured; on the basis of not influencing the original phoebe bournei natural forest stand, under-forest illumination conditions are sufficiently used for culturing phoebe bournei seedlings, the space layout refitting and adjustment of the forest stand can be conducted, and the problem of the high death rate of the phoebe bournei seedlings in the early stage can be solved; the method is simple in operation and low in cost, saves labor and materials and has good social benefits and ecological benefits, and under-forest updating is completed at a time.

Description

technical field [0001] The invention relates to a method for improving the survival rate of understory seedlings of rare and endangered tree species, in particular to a method for improving the survival rate of understory seedlings of Phoebe chinensis. Background technique [0002] Minnan (Phoebe bournei (Hemsl.) Yang), endemic to China, is a national second-class rare and endangered species. Fujian Nan belongs to Lauraceae, and Nan belongs to evergreen large tree, up to 20 meters high, 2.5 meters in diameter at breast height, straight trunk, dense crown, light yellow bark, peeling off in flakes. Branchlets pilose or nearly glabrous, winter buds taupe pilose. Leaves are leathery, lanceolate or oblanceolate, and panicles are born in the middle and lower leaf axils of new shoots, contracted and not expanded, hairy. Fruit ellipsoid or oblong. The flowering period is April, and the fruiting period is October-November. Minnan wood is fragrant and durable, light yellow, with a...

AI Technical Summary

Problems solved by technology

This method needs to firstly raise the seedlings in the nursery by manually collecting the seeds of Phoebe, and it takes at least one year to cultivate the seedlings. The promotion of the natural forest regeneration of Phoebe can be completed in two stages, which will consume a lot of manpower, material resources and time, and the cost is relatively high; this method Without the use of foreign soil, it is impossible to avoid the death of the seedlings caused by the damage of the root system of the seedlings to the decomposition of the litter and leaves in the original soil and the allelochemical substances secreted by the roots.