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Technical approach for mixed planting of strip mulberry and black locust in the conversion of cropland to forest on the plains
The technical approach for mixed planting of strip mulberry and black locust in the conversion of cropland to forest on the plains is: create an ecological forest through mixed planting of trees and shrubs, achieve a scientific and rational configuration of tree species, increase tree species diversity, focus on windbreak and sand fixation, use mulberry leaves for sericulture, and use mulberry twigs for weaving or papermaking; if fruit mulberry is planted, the mulberries can be eaten fresh or used to brew juice, which can achieve relatively high economic and social benefits.
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Site preparation and planting measures for mixed forests of strip mulberry and black locust in converting farmland back to forest on the plains
Black locust uses pit-shaped site preparation, with a specification of 80 cm by 80 cm by 80 cm, a plant-to-row spacing of 3 m by 5 m, and a planting density of 45 trees per 667 sq m; plant in spring and autumn, apply sufficient base fertilizer before planting, and water after planting; strip mulberry is planted between the black locust, using pit-shaped site preparation, and planted in spring, the rainy season, or autumn.
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Detailed Explanation of Spruce Seed Collection, Seedling Cultivation and Afforestation Techniques
Spruce, also known as Picea meyeri, coarse-branched spruce and rough-barked spruce. Its wood is relatively good, slightly soft, elastic and easy to work, and has many uses such as making high-quality building materials, furniture and mine props. Spruce is suited to a temperate humid climate and is one of the main timber tree species in North China, Northwest China and Southwest China. 1. Seed collection In the natural forest areas of the northwest, spruce seeds mostly begin to mature in October, and seed collection can begin once the cones turn from green to yellow-brown or chestnut-brown. The mother trees for seed collection are best chosen from 30-50 year old plants that are robust in growth, good in stem form
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Biological and Ecological Characteristics of the Chinese Parasol Tree and Its Seedling Propagation and Afforestation Techniques
Characteristics and Traits The Chinese parasol tree, also known as qingtong or Chinese wutong (Firmiana simplex (Linn.) W. F. Wight), is a plant in the genus Firmiana of the family Sterculiaceae. It is a deciduous tree, 15-20 m tall, with a diameter at breast height of 70 cm. The trunk is straight, and the bark is green when young and grayish-green and smooth when old. The branchlets are green. The leaves are nearly round, with a leaf blade length of 30 cm and a leaf width of 11-20 cm; the leaves are simple and alternate, with 3-5 palmate deep lobes, and the petiole is as long as the leaf, with a heart-shaped base and the lobe tips
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Carbon sink patterns of old-growth Korean pine forests in Changbai Mountain revealed
On December 23, the project "Study on Carbon Sink Function of Old-Growth Broad-Leaved Korean Pine Forests in Changbai Mountain," completed under the auspices of the Jilin Changbai Mountain Forest Ecosystem National Field Scientific Observation and Research Station, passed expert review organized by the Changchun Branch of the Chinese Academy of Sciences in Changchun. Experts held that the integration of multiple methods in this project, along with research on flux changes of components and process mechanisms, has reached the international advanced level. As the main body of terrestrial ecosystems, forests' carbon cycle processes and mechanisms play an important role in understanding forest carbon sink functions and their impact on and response to global climate change, while old
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Detailed Explanation of Key Techniques for Establishing a Seed Production Forest with Large Korean Pine Seedlings
Korean pine (Pinus koraiensis), of the family Pinaceae and genus Pinus, is an evergreen coniferous tree. It is mainly distributed in the Greater Khingan Mountains and Changbai Mountain areas of China, where its Korean pine forests form the climax community of the region, playing an enormous social, ecological and economic role. In the early years of the founding of New China, to meet the needs of economic construction, Korean pine timber was excessively logged, causing a massive decline in Korean pine trees; at present, only about 5 million mature Korean pine trees remain. Therefore, establishing Korean pine seed production forests on a large scale, rapidly and with high quality is of great
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Detailed Explanation of Key Grafting Techniques for Young Korean Pine Forests
1. Scion collection: Select mother trees with good growth traits and strong seed-bearing capacity in the seed orchard for scion collection, and carry it out in the early spring of the grafting year, in the first and middle ten days of March, before the sap begins to flow. The collection site is the 2nd to 3rd whorl of branches on the trunk, and these should be robust 1-year-old branches. The scion diameter should be about 8 mm. Do not collect too many scions at one time; 15-20 branches per tree can be controlled to protect the superior mother trees. After collection, the scions must be packaged, transported with moisture retention, or stored in a cellar. If using a rural vegetable cellar for storage, place 50 cm of ice at the bottom, put the scions in, and seal
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How is mixed-species afforestation of poplar and Korean pine carried out?
The mountainous area of eastern Northeast China is the native home of Korean pine. Under natural conditions, many Korean pines have certain types of broadleaf tree species associated with them throughout their entire growth and development process, forming coniferous-broadleaf mixed forests. With the development and utilization of forest resources in the forest region, Korean pine forests have decreased over large areas, and the consumption of timber resources is very large. To restore forest resources as quickly as possible, the introduced larch and poplar varieties, although fast-growing and quick to form forests, are not conducive to the full utilization of forest land productivity and the restoration of ecological communities, and will also cause deterioration of forest soil conditions and reduce forest land productivity.
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Detailed Explanation of Cultivation and Afforestation Techniques for Picea koraiensis (Korean Spruce)
Picea koraiensis is shade-tolerant, drought-tolerant, and cold-tolerant, with relatively fast growth. It is a major tree species in the forests from the Changbai Mountains to the Xiaoxing'anling Mountains in Northeast China, and is also a common nursery stock for landscaping. The following introduces the cultivation and afforestation techniques for Picea koraiensis. Superior Seed Breeding 1. Select good crop rotation. For Picea koraiensis sowing land, Pinus sylvestris var. mongolica and Larix (larch) stubble are suitable. For the remaining seedbeds of these two tree species, if the operation area is small and the rotation cannot be adjusted, large amounts of organic fertilizer and base fertilizer should be applied, and disinfection must be done carefully. 2. Seed germination. Snow stratification treatment is best
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Key Technical Points for Raising Taxus Seedlings in Container Bags and Afforestation
Taxus (yew), a tree species under first-class national key protection, is an evergreen tree reaching 30 m in height, with bark grayish brown, reddish brown, or dark brown, splitting into strips; first-year branches green or pale yellow-green; leaves linear, slightly curved or straight, apex gradually and slightly acuminate, with dense, uniform, minute rounded horn-like papillary protuberances on the midrib beneath; seeds ovoid, with a protruding short blunt tip at the apex; heartwood orange-red, sapwood pale yellowish brown, grain straight, extremely hard and durable, used for high-grade furniture, piano casings, joinery, etc., and regarded by the public as a treasure. Taxus grows mostly wild
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