CN116114528A

CN116114528A - Method for promoting stable yield, quality and sink improvement of castanea henryi forest

Info

Publication number: CN116114528A
Application number: CN202310082902.3A
Authority: CN
Inventors: 游惠明; 林捷; 谭芳林; 乐通潮; 尤龙辉; 郑立地
Original assignee: FUJIAN ACADEMY OF FORESTRY
Current assignee: FUJIAN ACADEMY OF FORESTRY
Priority date: 2023-01-30
Filing date: 2023-01-30
Publication date: 2023-05-16

Abstract

The invention belongs to the technical field of interplanting under forests, and discloses a method for promoting stable yield, quality improvement and sink improvement of castanea henryi forests, interplanting myrcia trees in empty lands in spring forests, and carrying out irrigation cultivation by 15-20 plants/mu; sowing the thatch with the sowing amount of 1.5 kg/mu in the whole winter garden; the full-field topdressing is carried out in the early spring and the early autumn two years after sowing, and the topdressing is carried out only under the castanea henryi crown in the third year and later, and the topdressing is carried out under the crown when the castanea henryi is topdressed. The castanea henryi forest interplanting cultivation technology provided by the invention is characterized in that grass seeds are planted at one time; selecting improved variety nutrition bag seedlings of 1-2 years of seedling-growing geranium tree with high oil content for mountain afforestation, and prohibiting afforestation with weak seedlings and diseased seedlings; the volatile oil and grease of the fruits, branches and leaves of the myrcia have antibacterial effect, and can improve the resistance of the forest stand to plant diseases and insect pests; the leaves and fruits are red, and the landscape effect of the forest stand can be improved in the fruit period. The invention forms a hierarchical distribution structure of tree species, and improves the stability of the system; the castanea henryi forest is comprehensively propelled to stabilize the yield, improve the quality and improve the sink.

Description

Method for promoting stable yield, quality and sink improvement of castanea henryi forest

Technical Field

The invention belongs to the technical field of interplanting under forests, and particularly relates to a method for promoting stable yield, quality and sink improvement of castanea henryi forests.

Background

Castanea henryi is a famous woody grain tree species in the south of China, and has become one of important financial income and main sources of income increase of farmers in the south hilly and mountainous areas of China. In the special industry of the castanea henryi, in the traditional operation process, a large number of castanea henryi farmers use herbicides in large quantity for convenient management and harvest; to pursue high yield on one side, excessive fertilization is performed. The mountain castanea henryi garden has larger gradient, and in the development process of castanea henryi, fertilizer and herbicide are applied for a long time, so that the soil nutrient imbalance of castanea henryi forest is caused, the soil is hardened, the characteristics of water flushing, soil running and fertilizer loss are formed, the defects of castanea henryi yield reduction, quality reduction and the like are caused, the economic benefit of an orchard is low, the yield of fruit trees is low and unstable, and the benefits of the woodland and the income of peasants are directly influenced. How to widen the development space of special economic forests, the boosting industry increases efficiency, increases ecological value and increases income of farmers becomes a current urgent problem to be solved. At present, there are Guan Zhuili Lin Di quality synergistic measures, mainly including interplanting broad-leaved trees, especially interplanting precious tree species, planting Chinese herbal medicines under forests, leguminous plants and the like, which can promote the synergy of forests to a certain extent, but the broad-leaved trees have small short-term effect on forests, especially the precious tree species have long period, are difficult to realize short-term income, and still have the problem of water and fertilizer loss in winter; chinese herbal medicines such as excavation of polygonatum cyrtonema can cause water and soil loss to a certain extent; interplanting leguminous plants, which are planted again year by year, and the growing period of the leguminous plants is difficult to extend to winter, and water and fertilizer loss problems still exist in winter forests, etc.; in the aspect of herbicide, the use of chestnut farmers is reduced in recent years, but the cost is high due to manual weeding; how to improve the soil fertility of the forest land, improve the resistance of the forest stand, reduce the labor cost, facilitate the harvest and promote the stable production of the castanea henryi becomes a difficult problem to be solved by local people.

Through the above analysis, the problems and defects existing in the prior art are as follows: (1) Interplanting broad-leaved trees and leguminous plants, and water and fertilizer loss still exists in winter; (2) Planting Chinese herbal medicines under the forest, and possibly solving the problem of water and soil loss to a certain extent in the digging process in the harvest period; (3) Before the castanea henryi is harvested in the season, the herbs in the forests must be properly removed, the castanea henryi is convenient to harvest, and the castanea henryi is simply manually weeding or a mower, so that the cost is high and the speed is low. If one-time planting can be realized, weeding is not needed for many years, quality and collection of forest lands are improved, the yield of castanea henryi is stable, and obvious economic, ecological and social benefits are brought to castanea henryi.

Disclosure of Invention

Aiming at the problems existing in the prior art, the invention provides a method for promoting stable yield, quality and sink improvement of castanea henryi.

The invention discloses a method for promoting stable yield, quality and sink improvement of castanea henryi, which comprises the following steps: interplanting geranium trees in the empty lands of the forests in spring, wherein the spacing between the planted plants is more than 2m, and the planting is performed by irrigation; sowing the thatch with the sowing amount of 1.5 kg/mu in the whole winter garden; the full-circle topdressing is carried out in early spring and autumn two years after sowing, and the topdressing is carried out only under the castanea henryi forest crown in the third and later years, and the topdressing is carried out under the crown when the castanea henryi is topdressed.

Further, the method for promoting stable yield, quality and sink improvement of castanea henryi comprises the following steps:

step one, interplanting geranium trees in empty lands in spring forests: tree species type selection, planting and tending;

step two, sowing the thatch in the whole winter garden: the woodland is cleaned, the soil is prepared, the tree disk is ridged and grass seeds are sowed.

And thirdly, topdressing is carried out on the whole garden in early spring and early autumn after sowing, and the topdressing is carried out only under the crown of the castanea henryi forest in the third and later years, and the topdressing is carried out under the crown during the topdressing of the castanea henryi.

Further, the selecting method of the geranium tree type in the first step includes: and (3) selecting improved variety nutrition bag seedlings of the 1-2 year-old geranium tree with high oil content for mountain afforestation, and prohibiting afforestation with weak seedlings and diseased seedlings.

Further, the planting method of the myrcia in the first step comprises the following steps:

(1) After early spring rain is penetrated, interplanting bay leaves trees in the empty space in the forest, and carrying out scattered planting, wherein large empty space is preferentially selected for planting, and the spacing between planting plants is more than 2m;

(2) And (3) irrigation cultivation: timely arranging pruning and topping treatment measures, wherein the lighting of the castanea henryi is not influenced;

(3) Planting the castanea henryi tree crown beyond 0.5m to form a tree species hierarchical distribution structure, and avoiding water and fertilizer contention with castanea henryi.

Further, the tending method of the geranium tree in the first step comprises the following steps: 2 years of continuous tending after planting, and 1 time of tending each year in early spring and autumn; tending for 1 time in 9-10 months of the current year; then, the young is nursed for 1 time in early spring and early autumn.

Further, the tending content comprises soil loosening, hilling, weeding, fertilization and topping pruning.

Further, the woodland cleaning and soil preparation method in the second step comprises the following steps: before sowing grass seeds, removing weeds in the forest land, and rotating soil by a rotary tillage plow for about 10cm, and leveling the whole fine ground, wherein the root system of the fruit tree is not damaged; when the soil moisture content is insufficient, water is irrigated to supplement soil moisture before the soil is turned over, and a rake is used for leveling the ground after the soil is turned over; two thirds of soil preparation, applying organic fertilizer as base fertilizer and spreading 3-5 kg/mu.

Further, the tree plate ridging method in the second step comprises the following steps: the shallow soil turning blocks of the tree disk are raked, crushed and fine before ridging, the trunk is taken as the center during ridging, soil between rows is planted in the tree disk, the height of the soil is 15-20 cm, a slope of 10-15 degrees is formed, and the ridge surface is leveled and properly clapped; the grass is not covered around the trunk at a distance of 30 cm.

Further, the method for sowing grass seeds in the second step comprises the following steps:

(1) Grass seed treatment: sowing in a sowing mode, soaking seeds for 12 hours before sowing, pouring water, and sowing after mixing the thatch seeds, fine sand and organic fertilizer fine particles in a ratio of 1:10:1; the humidity of the mixed fine sand is controlled to be 40-50%, and the mixed fine sand is uniformly stirred at night 1 day before sowing;

(2) Sowing quantity: 1.5 kg/mu.

(3) Broadcasting time: at the beginning of 11-12 months, grass seeds are sown after the grass seeds are thoroughly soaked in rain, and if the grass seeds are not rained for a long time and are faster than a sowing season, the grass seeds are properly watered manually and sown again;

(4) Broadcasting mode: the broadcasting is divided into two times, one half is used for broadcasting once, and the rest half is used for repeated broadcasting once; slightly pulling and covering soil by 2-3 cm by using a rake after sowing, and then compacting; watering immediately after the thatch is sown, wherein the relative water content of soil is 65-85%; when the relative water content of the surface soil is lower than 65%, watering properly; covering rice straw after watering until the seedling grows to about 5cm, and lifting the rice straw;

(4) And (3) tending: applying fertilizer for the whole field for 2 years continuously after emergence, applying fertilizer for 1 time each in early spring and early autumn each year, and applying compound fertilizer;

(5) The additional fertilizer is applied under the crown of the castanea henryi forest only after the 3 rd year of emergence, the additional fertilizer under the crown is accompanied with the additional fertilizer during the additional fertilizer of the castanea henryi every year, the additional fertilizer is not applied in the whole field, and the type and the unit area consumption of the fertilizer are the same as those of the castanea henryi fertilizer.

Further, the additional fertilizer amount of the compound fertilizer in the step (4) is 5-7.5 kg/mu; preferably, the compound fertilizer is applied in rainy days, and then the compound fertilizer is dissolved in water and sprayed, and the water is poured once after the spraying.

In combination with the technical scheme and the technical problems to be solved, the technical scheme to be protected has the following advantages and positive effects:

first, aiming at the technical problems in the prior art and the difficulty of solving the problems, the technical problems solved by the technical proposal of the invention are analyzed in detail and deeply by tightly combining the technical proposal to be protected, the results and data in the research and development process, and the like, and some technical effects brought after the problems are solved have creative technical effects. The specific description is as follows:

the invention provides a castanea henryi forest interplanting cultivation technology capable of stabilizing yield, improving quality and increasing yield, grass seeds are planted once, weeding and tending are not needed for many years, weeding in a whole circle is not needed before castanea henryi harvesting season, creeping growth of festuca arundinacea does not influence castanea henryi harvesting, and labor force and cost are saved; selecting improved variety nutrition bag seedlings of 1-2 year-old geranium tree with high oil content for mountain afforestation, and forbidding afforestation with weak seedlings and diseased seedlings; the volatile oil and grease of the fruits, branches and leaves of the myrcia have antibacterial effect, and can improve the resistance of the forest stand to plant diseases and insect pests; the leaves and fruits are red, and the landscape effect of the forest stand can be improved in the fruit period. According to the invention, the leaves trees are interplanted in the empty space in the spring forest to form a hierarchical distribution structure of tree species, so that the complexity of the system structure is increased, the stability of the system is improved, and the stable yield, quality and sink of the Castanea henryi forest are promoted.

The grass seeds selected by the invention, namely the thatch for 1 time, are planted for 4-5 years without additional manual weeding, the grass seeds creeping growth does not influence the collection of the castanea henryi, are dried in summer to form thick grass layers, increase soil organic matters, do not contend with the castanea henryi for water and fertilizer, efficiently improve the soil fertility, have obvious effect of increasing the sink, remarkably improve the resistance to plant diseases and insect pests and drought, and realize stable yield, quality improvement and sink increase of the castanea henryi forest.

Secondly, the technical scheme is regarded as a whole or from the perspective of products, and the technical scheme to be protected has the following technical effects and advantages:

according to the invention, the grass irrigation interplanting repair technology is adopted, the shrubs can release antibacterial substances, the root systems of the shrubs are compact, the soil structure is improved, the soil fertility is improved, the moisture is preserved in summer and the heat is preserved in winter, the complexity of the community structure is improved, the resistance to plant diseases and insect pests and drought is remarkably improved, the stable yield of the castanea henryi forest is effectively promoted, the quality and the yield of the soil are improved, and the labor cost is reduced.

Thirdly, as inventive supplementary evidence of the claims of the present invention, the following important aspects are also presented:

(1) The technical scheme of the invention fills the technical blank in the domestic and foreign industries:

the improved variety of the myrcia with high oil content selected by the technical group is not reported nationally. The method is characterized in that on the basis of collecting the fruits of the high-oil-content fine tree of the geranium tree in 20 county cities of 6 provinces nationwide, the fine seeds are screened according to the test result, and the fine seeds are cultivated in a garden in a large scale and then applied to mountain forestation. The quality and sink improving technology of the castanea henryi Lin Wen production of the fescue and myrcia stuartii is not reported at present.

(2) The technical scheme of the invention solves the technical problems that people are always desirous of solving but are not successful all the time:

the technical scheme of the invention solves the technical problems that forest farmers are always desirous of solving but are not successful all the time: (1) The winter water and fertilizer loss problem, the broad-leaved tree or grass seed which is interplanted in the past, the winter castanea henryi Lin Linde still has baldness, and the water and fertilizer loss still exists, the technical scheme, the winter growth of the thatch and the drying of summer fundamentally solve the difficult problem of long-term puzzling of chestnut farmers and scholars, namely the water and fertilizer loss in winter of castanea henryi forest, and the water and fertilizer loss in winter of castanea henryi forest is not in competition with castanea henryi, and the thickening, moisturizing and heat preservation of castanea henryi forest are promoted; (2) Before the Castanea henryi is harvested in the season each year, the Castanea henryi can spend time and energy for weeding, the labor time and the labor cost are increased, and the technical scheme fundamentally solves the problem. The thatch stolons grow, no additional weeding is needed for 1 planting for many years, the weeding work is omitted, and the labor time and the labor cost are saved. The method does not need to take time to plant again every year, and belongs to perennial herbs.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a flowchart of a method for promoting stable yield, quality and sink improvement of castanea henryi according to an embodiment of the invention.

Fig. 2 is a technical flow chart of a method for promoting stable yield, quality and sink improvement of castanea henryi according to an embodiment of the invention.

Detailed Description

The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Aiming at the problems existing in the prior art, the invention provides a method for promoting stable yield, quality and sink improvement of castanea henryi, and the invention is described in detail below with reference to the accompanying drawings.

In order to fully understand how the invention may be embodied by those skilled in the art, this section is an illustrative embodiment in which the claims are presented for purposes of illustration.

As shown in fig. 1, the method for promoting stable yield, quality and sink improvement of castanea henryi provided by the embodiment of the invention comprises the following steps:

s101, interplanting geranium trees in empty lands in spring forests, and carrying out irrigation cultivation on 15-20 plants/mu;

s102, sowing festuca arundinacea in a whole winter garden, wherein the sowing amount is 1.5 kg/mu;

s103, applying fertilizer to the whole garden in early spring and early autumn after sowing, applying fertilizer under the crown of the castanea henryi forest only in the third and later years, and applying fertilizer under the crown during applying the castanea henryi.

As a preferred embodiment, the method for promoting stable yield, quality and sink improvement of castanea henryi provided by the embodiment of the invention comprises the following steps:

1. method for interplanting myrcia in forest

1.1 Tree species selection

And (3) selecting improved variety nutrition bag seedlings of 1-2 years of high oil content to afforest, and forbidding afforestation with weak seedlings and diseased seedlings. The volatile oil and grease of the fruits, branches and leaves of the myrcia have antibacterial effect, and can improve the resistance of the forest stand to plant diseases and insect pests. The leaves and fruits are red, and the landscape effect of the forest stand can be improved in the fruit period.

1.2 planting method

(1) After early spring rain is penetrated, interplanting geranium trees in the forest at a controlled area, performing scattered planting, and selecting large-space planting, wherein the plant spacing is larger than 2m and 15-20 plants/mu; (2) irrigation cultivation: timely arranging pruning and topping treatment measures, taking the condition that the illumination of castanea henryi is not affected as a criterion, the tillering capability of the myrcia is strong, the cultivation is easy to irrigate, and the method belongs to the species of the rural tree; (3) Planting the castanea henryi tree crown beyond 0.5m to avoid competing with castanea henryi for water and fertilizer; (4) The hierarchical distribution structure of tree species is formed, the complexity of the system structure is increased, and the stability of the system is improved.

1.3 tending

And 2 years of cultivation are continuously carried out after planting, 1 time of cultivation is carried out in early spring and early autumn each year, 1 time of cultivation is carried out in 9-10 months of the current year, and 2 times of cultivation is carried out after spring. The tending content mainly comprises soil loosening, earthing up, weeding, fertilization and topping pruning.

2. Winter whole-garden murine thatch sowing technology

2.1 cleaning and soil preparation of woodland

Before sowing grass seeds, removing weeds in the forest land, and rotating soil by a rotary tillage plough for about 10cm, and leveling the whole fine ground, wherein the root system of the fruit tree is not damaged. When the soil moisture content is insufficient, water is filled to supplement the soil moisture before the soil is turned over, and a rake is used for leveling the ground after the soil is turned over. About two thirds of soil preparation, applying base fertilizer (organic fertilizer) and spreading 3-5 kg/mu.

2.2 ridging with Tree plates

The shallow soil turning blocks of the tree plate are raked, crushed and fine before ridging, the trunk is taken as the center during ridging, soil between rows is planted in the tree plate, the height of the soil is 15-20 cm, a slope of 10-15 degrees is formed, the ridge surface is leveled, and proper tamping is performed. The trunk is left at a certain distance (radius about 30 cm) without grass covering.

2.3 sowing grass seeds

(1) Grass seed treatment: sowing in a sowing mode, soaking seeds for 12 hours before sowing, pouring water, sowing after mixing with the thatch seeds, fine sand and organic fertilizer (fine particles) in a ratio of 1:10:1, controlling the humidity of the mixed fine sand to be 40-50%, and uniformly stirring the mixed fine sand at night 1 day before sowing.

(2) Sowing quantity: 1.5 kg/mu;

(3) Broadcasting time: grass seeds are sown in the early period of 11-12 months, preferably after the grass seeds are thoroughly sown in the rain, if the grass seeds are not rained for a long time and the grass seeds are quickly sown in the season, the grass seeds are required to be properly watered by manpower and sown again.

(4) Broadcasting mode: the sowing is divided into two times, one half of the sowing is used, the sowing is repeated for one time with the other half, the sowing is uniform as much as possible, the harrow is used for lightly pulling and covering soil for 2-3 cm after sowing, then the soil is pressed, the seeds are prevented from being hung, the soil is immediately watered after the thatch is sowed, the relative water content of the soil is 65-85%, and when the relative water content of the surface soil is lower than 65%, the soil is properly watered; and (3) covering the rice straw after watering, and not only preserving water but also preserving heat until the seedlings grow to about 5cm, and lifting the rice straw.

(5) And (3) tending: the full-field topdressing is carried out continuously for 2 years after emergence, the topdressing is carried out for 1 time in early spring and early autumn each year, the composite fertilizer is adopted, the topdressing amount of the composite fertilizer is 5-7.5 kg/mu, the application is better in rainy days, the composite fertilizer can be dissolved into water, and then the water is sprayed, and the water is sprayed again to prevent the composite fertilizer from burning leaves.

(6) The additional fertilizer is applied under the crown of the castanea henryi forest only after the 3 rd year of emergence, the additional fertilizer under the crown is accompanied with the additional fertilizer during the additional fertilizer of the castanea henryi every year, the additional fertilizer is not applied in the whole field, and the type and the unit area consumption of the fertilizer are the same as those of the castanea henryi fertilizer.

In order to prove the inventive and technical value of the technical solution of the present invention, this section is an application example on specific products or related technologies of the claim technical solution.

In the construction of the Castanea henryi forest, the comprehensive efficiency of screening the thatch from 5 grass seeds is highest for 5 years, and for the best among the best, different cultivation experiments of the thatch are set, and in order to solve the implementation effect of the technology, after the technology is implemented, the Castanea henryi yield, the forest fertility and the forest stand health condition for 4 years are continuously monitored, and finally the stable yield, the quality improvement and the sink improvement effect of the technology mode are screened.

The method collects the leaves of the 20 county cities of 6 provinces nationwide, performs test work on the oil content of the leaves, screens out high-oil-content fine varieties, and performs large-scale seedling cultivation, wherein the leaves of the technology group are nursery seedlings. ( (1) You Huiming, yang Jinde, kang Yongwu, li Jianmin, fan Huihua, su Liang, you Longhui, zeng Guihua analysis of oil content and fatty acid composition of seeds of Geranium thunbergii of different species [ J ]. Chinese oil, 2021,46 (06): 98-101; (2) Luo Fan, fei Xueqian, and so on, essential component analysis of essential oil and grease of Pelargonium graveolens [ J ]. Forestry science research 2015,28 (2): 284-288. )

The embodiment of the invention has a great advantage in the research and development or use process, and has the following description in combination with data, charts and the like of the test process.

Data evidence:

stable production data evidence

The yield increase rate table (see table 1) of the measure group per mu of the normal season and the disaster season shows that the implementation of the measure can obviously improve the yield of the castanea henryi forest, and especially the yield increase in the disaster season is more obvious and is more than 370%; the first year of normal season increases production by 37%, followed by a 10% increase in production per year.

Table 1 yield per mu for normal and disaster season measure group versus no measure group: % of (B)

Table 2 rate of decrease of the disaster season measure group and the no measure group per mu yield compared with the normal season no measure group, unit: % of (B)

Index type	Serious pest and disease damage season	Dry season
			Measure group	19.66	-33.12
No measure group	-77.14	-85.90

As can be seen from the disaster season measure group and the decrease rate (see Table 2) of the mu yield of the no-measure group compared with that of the normal season, the measure can be effectively and stably produced, and the mu yield of the no-measure group is decreased by more than 77% when the disaster is encountered; the acre yield of the pest and disease damage severe disaster season measure group is still higher than that of a normal season no measure group by about 20%, most of the dry season no measure group even has the absolute yield phenomenon, and the measure group is only reduced by 33% compared with the normal season no measure group; therefore, the resistance of the castanea henryi to disasters can be effectively improved by implementing the measures, the yield is effectively stabilized, and the economic income of forest farmers is ensured.

(II) quality improvement and sink improvement data evidence

In order to scientifically screen interplanting modes which are favorable for increasing yield and effectively improving forest quality, 5 grass seeds are selected to carry out measure experiments, continuous tracking and monitoring for 3 years are carried out, and average benefits of 3 years are counted. 7 indexes such as average acre profit for 3 years, average acre yield for 3 years, disease and pest resistance, quality index of the castanea henryi, improvement rate of content of soil C, improvement rate of content of soil N, and input convenience index are selected, a comprehensive benefit evaluation index system of different interplanting modes of the castanea henryi is constructed, comprehensive benefits of different interplanting measures are scientifically evaluated by adopting an entropy weight evaluation method, and the result is shown in table 3, and the optimal mode of the festuca arundinacea is screened.

TABLE 3 comprehensive benefit evaluation results for different modes

Different modes	No measure	All-grass of round leaf sea-ear	Radix et rhizoma Phragmitis	Astragalus sinicus	Ryegrass (ryegrass)	Royal jelly
							Score of	0.26	0.33	0.60	0.78	0.82	0.97

In order to seek a high-efficiency quality improvement and exchange increase mode, the invention designs measures for perennial grass seeds, monitors the improvement condition of the carbon and nitrogen content of the soil, counts the change rate of the soil fertility quality of each measure group compared with that of a no measure group (see table 4), and results show that the exchange increase effect of the soil of 'interplanting myrcia and 1.5 kg/mu of thatch' is most obvious, the carbon content of the soil is increased by 104%, the nitrogen content of the soil is increased by 69%, and the improvement of the nitrogen content of the soil is more than that of other measures, so that the invention screens 'interplanting myrcia and 1.5 kg/mu of thatch' as a method for facilitating the stable yield, quality and exchange increase of castanea henryi forest.

Table 4 rates of change of carbon and nitrogen content in soil for different measure groups compared to no measure group, units: % of (B)

Types of measures	Nitrogen content	Carbon content
			1 kg/mu of thatch	20.35	25.97
Ryegrass 2 kg/mu	55.83	38.87
			2 kg/mu of sweet potato with photinia serrulata leaves	81.39	42.55
Interplanting myrcia trees, festuca arundinacea, 1 kg/mu and ryegrass, 0.5 kg/mu	68.73	60.04
			Interplanting Pelargonium graveolens and herba Imperatae 1.5 kg/mu	68.98	104.10

The foregoing is merely illustrative of specific embodiments of the present invention, and the scope of the invention is not limited thereto, but any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present invention will be apparent to those skilled in the art within the scope of the present invention.

Claims

1. The method for promoting stable yield, quality and sink improvement of the castanea henryi is characterized by comprising the following steps of: interplanting geranium trees in the empty land in the forest in spring, and carrying out irrigation cultivation on the plants per mu of 15-20 plants; sowing the thatch with the sowing amount of 1.5 kg/mu in the whole winter garden; the full-field topdressing is carried out in the early spring and the early autumn two years after sowing, and the topdressing is carried out only under the castanea henryi crown in the third year and later, and the topdressing is carried out under the crown when the castanea henryi is topdressed.

2. The method for promoting stable yield, quality and sink improvement of castanea henryi as claimed in claim 1, wherein the method for promoting stable yield, quality and sink improvement of castanea henryi comprises the following steps:

step one, interplanting geranium trees in empty lands in spring forests: selecting tree species type, planting and tending;

3. The method for promoting stable yield, improving quality and increasing sink of castanea henryi as claimed in claim 2, wherein the selection method of the myrcia species in the first step comprises the following steps: and (3) selecting improved variety nutrition bag seedlings of the 1-2 year-old geranium tree with high oil content for mountain afforestation, and prohibiting afforestation with weak seedlings and diseased seedlings.

4. The method for promoting stable yield, improving quality and increasing sink of castanea henryi as claimed in claim 2, wherein the planting method of the myrcia in the first step comprises the following steps:

5. The method for promoting stable yield, improving quality and increasing sink of castanea henryi as claimed in claim 2, wherein the tending method of the myrcia in the first step comprises the following steps: 2 years of continuous tending after planting, and 1 time of tending each year in early spring and autumn; the cultivation is carried out for 1 time in 9-10 months in the same year, and 2 nd time after spring.

6. The method for promoting stable yield, improving quality and increasing yield of castanea henryi as claimed in claim 5, wherein the tending content comprises soil loosening, hilling, weeding, fertilizing and topping pruning.

7. The method for promoting stable yield, improving quality and increasing sink of castanea henryi woodland according to claim 2, wherein the woodland cleaning and soil preparation method in the step two comprises the following steps: before sowing grass seeds, removing weeds in the forest land, rotating soil for 10cm by using a rotary tillage plow, and leveling and trimming the ground; when the soil moisture content is insufficient, water is irrigated to supplement soil moisture before the soil is turned over, and a rake is used for leveling the ground after the soil is turned over; two thirds of soil preparation, applying organic fertilizer as base fertilizer and spreading 3-5 kg/mu.

8. The method for promoting stable yield, improving quality and increasing yield of castanea henryi as claimed in claim 2, wherein the tree plate ridging method in the second step comprises the following steps: the shallow soil turning blocks of the tree disk are raked, crushed and fine before ridging, the trunk is taken as the center during ridging, soil between rows is planted in the tree disk, the height of the soil is 15-20 cm, a slope of 10-15 degrees is formed, and the ridge surface is leveled and properly clapped; the grass is not covered around the trunk at a distance of 30 cm.

9. The method for promoting stable yield, improving quality and increasing sink of castanea henryi as claimed in claim 2, wherein the method for broadcasting grass seeds in the second step comprises the following steps:

(2) Sowing quantity: 1.5 kg/mu.

(3) Broadcasting time: at the beginning of 11-12 months, grass seeds are sown after the grass seeds are thoroughly soaked in rain, and if the grass seeds are not rained for a long time and the grass seeds are too fast than the sowing season, the grass seeds are properly watered manually and sown again;

(4) Broadcasting mode: the broadcasting is divided into two times, one half is used for broadcasting once, and the rest half is used for repeated broadcasting once; slightly pulling and covering soil by 2-3 cm by using a rake after sowing, and then compacting; watering immediately after the thatch is sown, wherein the relative water content of soil is 65-85%; when the relative water content of the surface soil is lower than 65%, watering properly; covering the rice straw after watering until the seedling grows to 5cm, and lifting off the rice straw;

(5) And (3) tending: applying fertilizer for the whole field for 2 years continuously after emergence, applying fertilizer for 1 time each in early spring and early autumn each year, and applying compound fertilizer;

(6) The additional fertilizer is only applied under the crown of the castanea henryi forest after the 3 rd year of emergence, and the additional fertilizer under the crown is accompanied with the additional fertilizer during the additional fertilizer of the castanea henryi, so that the additional fertilizer is not applied in the whole field, and the type and the unit area consumption of the fertilizer are the same as those of the castanea henryi fertilizer.

10. The method for promoting stable yield, quality improvement and sink improvement of castanea henryi forest according to claim 9, wherein the additional fertilizer amount of the compound fertilizer in the step (4) is 5-7.5 kg/mu; preferably, the compound fertilizer is applied in rainy days, and then the compound fertilizer is dissolved in water and sprayed, and the water is poured once after the spraying.