CN112690161B

CN112690161B - Mixed planting method for Australian and sweet oranges in dry-heat valley area

Info

Publication number: CN112690161B
Application number: CN202011460149.XA
Authority: CN
Inventors: 刘海刚; 孟富宣; 段元杰; 方海东; 孙漫莹; 金杰; 史亮涛
Original assignee: RESEARCH INSTITUTE OF TROPICAL ECO-AGRICULTURAL SCIENCES YUNAN ACADEMY OF AGRICULTURAL SCIENCES
Current assignee: RESEARCH INSTITUTE OF TROPICAL ECO-AGRICULTURAL SCIENCES YUNAN ACADEMY OF AGRICULTURAL SCIENCES
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2024-01-30
Anticipated expiration: 2040-12-11
Also published as: CN112690161A

Abstract

The invention discloses a method for mixed planting of Aoan and sweet oranges in a dry and hot valley region. Compared with the existing mode of singly planting mango and sweet orange, the method of the invention has the advantages that the yield of the Australian mango is doubled, the commodity of the sweet orange is greatly improved, the production cost is reduced, the utilization efficiency of land resources is improved, the maximization of production benefit is realized, the pesticide consumption is greatly reduced, and the green production development direction is led.

Description

Mixed planting method for Australian and sweet oranges in dry-heat valley area

Technical Field

The invention belongs to the technical field of mango and sweet orange planting, and particularly relates to a method for mixing and planting of Australian and sweet oranges in a dry-hot valley region.

Background

The Australian mango is a world-known mango variety, has the name of 'mango prince', is originally produced in Australia, has pink mature fruits, is flat peach-shaped, has a single fruit weight of 500-1500 g and has a sugar content of 18%. The fruit is large, nuclear and small, has no fiber, has fine and smooth meat quality, is not greasy, is rich in aromatic alcohol, and is widely planted in areas such as Hainan, guangxi, yunnan and Guangdong in the late 12 th to the early 2 th of the flowering period and in the early 6 th to the early 7 th of the maturation period. The Aoan is strong in vigor, the crown of the tree is large, the branches are strong, the branches and leaves are luxuriant, the leaves are large and dense, the inflorescence is long and strong, the new branches are brittle, the new branches are easy to mechanically break, and the new branches are easy to sag and bend after the new branches are obtained. At present, no special cultivation technical measures exist in the Aoan, the same asThe cultivation method in one area is the same as or similar to other varieties, the tree form is in a natural round head shape or spindle shape, the row spacing of flat-land plants is 4m multiplied by 5m to 5m multiplied by 5m, and the yield in the high yield period is 500 kg to 900kg/667m ² . The Aoan has vigorous growth vigor, big branches, crisp fruit, low fruit setting rate, lower yield compared with other varieties, easy aging of the branches, obvious phenomenon in years and less possibility of obtaining high and stable yield.

Citrus is one of the fruits with the largest planting area in the world at present, and the sweet orange is one of the main types of citrus, and is widely distributed in the provinces of Jiangxi, chongqing, sichuan, hunan, yunnan and the like in China, and at present, the main areas of the national citrus are impacted by yellow dragon diseases, the yield of the sweet orange is greatly reduced, and the supply of orange products is not required.

At present, mango and sweet orange are planted by adopting single fruit tree continuous planting, the growth vigor of the Aoan is vigorous, the new tip germination capacity is strong, the requirement on growth space is large, the Aoan is planted singly, and the number of plants planted in unit area land is small. The sweet oranges have the advantages of small plant shape, developed fibrous roots, overlarge planting density, inconvenient agronomic management, unfavorable pest control, staggered root systems among plants, strong competition of nutrients and water among plants, slow development of weak plants and complementary plants, and difficulty in forming high-yield trees; the planting density is too small, the space is wasted, and the unit area obtains high yield and is late. In the face of the current situation of lack of cultivated land, limited land resources are not fully utilized, and the economic benefit of agricultural production is not maximized after harvesting for one season in one year.

Disclosure of Invention

The invention aims to provide a mixed planting method of Australian and sweet oranges in a dry and hot valley area, so as to improve the utilization efficiency of limited land resources and maximize production benefits.

The invention is realized by the following technical scheme:

a method for mixing and planting australian and sweet oranges in a dry and hot valley region, comprising the following steps: and planting mango and sweet orange seedlings in an interlaced manner, grafting an Aoan scion on the mango seedling branches, reserving a main branch and an auxiliary main branch according to the round crown, taking the second layer of auxiliary main branch as a fruiting branch, and pruning the fruiting tree four times per year.

Specifically, the mango seedling adopts 1 year-old Ma Qiesu or chickpea mango seedling nutrition bag seedling.

Further, the mango seedlings are truncated before field planting, tender tips are sheared, and a shearing opening is arranged above the dense joints.

Specifically, mango seedlings are planted according to 3m multiplied by 6m plant row spacing calibration, and oranges are planted along the middle of 2 rows of mangoes according to 2m plant row spacing calibration.

Specifically, after the scion survives and germinates, 3-4 new branches with vigorous growth vigor and moderate positions are selected and reserved as main branches for each scion, crossing, over-dense and weak branches are removed, the branches are promoted when the main branches germinate slightly for three times, 3 branches with similar growth vigor are selected and reserved as auxiliary main branches, the branches are truncated when the auxiliary main branches grow to 40-50 cm, and 3 secondary main branches on the second layer are reserved as fruiting parent branches of the first year of production.

Specifically, before the first pruning of the mango tree, excessive dense branches, yin weak branches, pest branches, cross branches and overlapped branches are thinned and removed, the excessive long branches are shortened, the transparency of the crown is increased, and the flower bud differentiation is promoted.

After physiological fruit dropping, the second pruning of mango tree cuts off the pedicel and branch affecting the fruit development, eliminates malformed fruit, pest fruit and too small abortive fruit, and retains 1-2 fruits with normal development in one spike.

And after the mango tree is pruned for the third time, the first layer and the second layer of auxiliary main branches or fruiting branches are cut in a short way in time, aged branches are pruned, and part of the main branches with proper positions is cut in a short way and reserved for replacing the first layer and the second layer of auxiliary main branches in a tree-by-tree mode.

After the mango tree is slightly aged in autumn, the fourth pruning of the mango tree is performed to remove excessive dense, crossed, overlapped, weak yin, overgrowth and slight disease and insect.

Further, the aged tree body of the Aoan branch is subjected to re-cutting, renewing and rejuvenating, and is cut at a grafting opening after harvesting, and the stock branch group is re-cultivated.

Specifically, the flower forcing fertilizer, the flower-withering fertilizer, the fruit strengthening fertilizer and the fruit post-fertilizer are respectively applied to the fruiting tree of the Aoan.

Wherein, flower forcing fertilizer: and applying 250g of urea, potassium sulfate and compound fertilizer to each plant for 10-11 months.

Flowers-reducing fertilizer: trace element water-soluble fertilizer is applied for 1 time after flowers are removed.

Fruit strengthening fertilizer: about 30d after flowers are removed is the rapid growth period of the fruit, also the spring tip extraction period of young fruiting trees, and nitrogen and potassium water-soluble fertilizers are applied for 1-2 times.

Fruit fertilizer: the heavy fertilizer is applied immediately after fruit picking, 15kg of organic fertilizer and 1kg of balanced compound fertilizer are applied to each plant, shi Suxiao nitrogenous fertilizer can be applied before fruit picking in the harvest year, and then the organic fertilizer and the balanced fertilizer are applied 1-2 months later.

The beneficial effects of the invention are as follows:

1) The Australian tropical fruit trees are widely distributed in the tropics and the subtropics, the sweet oranges have wider adaptability to the climate and the soil, the two fruit trees can be planted in the same habitat in the tropics and the subtropics, and the two fruit trees have no serious common diseases and insect pests, have little phenomenon that diseases and insects are hosts of each other, and have no chemical feeling;

2) The Australian and sweet orange root system distribution layers are different, the Australian fibrous roots are fewer and are mainly distributed 20-40 cm below the ground surface, the sweet orange fibrous roots are developed and are mainly distributed within 20cm below the ground surface, and the nutrient and water competition relationship between the Australian fibrous roots and the sweet orange fibrous roots is not obvious. The Australian and the sweet oranges are mixed in an interlaced mode, the line spacing between the two lines of sweet oranges is larger, the root system is not easy to form interlacing, the competition of nutrients and moisture is small, the growth and development are facilitated, and compared with the sweet oranges planted by the technology with single line spacing specifications of 2m multiplied by 3m and 3m multiplied by 3m, the biomass of overground parts is improved by 30-40% after field planting for 2 years.

3) The Aoan adopts the dwarfing technology, thereby not only meeting the requirement of sunshine hours for the growth and development of the sweet oranges, but also effectively shielding strong western sun, improving the fruit setting rate of the sweet oranges, reducing the leaf burn rate and the sun fruit rate, and greatly improving the commodity of the sweet oranges.

4) Effectively prevent or greatly reduce the lateral migration and the propagation speed of two fruit tree diseases and insect pests, and play a role in biological control. The dry heat river valley has warm climate, no severe cold in winter, more disease and pest species and generation algebra of the sweet oranges, large control difficulty, mango which is a lacquer tree plant, has the effect of avoiding partial insects, most of sweet orange pests such as leaf miner, psyllium, phoenix butterfly and the like do not like to eat mango, yellow dragon disease can not take mango as a propagation host, and most of disease and pest of mango do not like to eat sweet orange or take sweet orange as a host.

5) With the prior art, the Aoan is singly planted, each 333.5m ² 13-17 plants are planted, and the yield in the high yield period is 250-450 kg; sweet orange is singly planted, and every 333.5m of the full-growing period of the standardized plantation ² The 30-35 plants are reserved, the yield in the high yield period is 2000kg and can reach 3000kg at most; the method of the invention has the land with equal area, each 667m ² The 37 strains of the Aoan mango and the 56 strains of the sweet orange are planted respectively, the yield of the Aoan mango in the high yield period is 900-1100 kg, and the yield of the sweet orange is 4000-5000 kg, compared with the prior art, the yield of the Aoan mango is improved by more than one time, the yield of the sweet orange is not greatly different, but the commodity of the two fruits is greatly improved, and the economic benefit is remarkable.

Detailed Description

The following description of the present invention will be made more complete and clear in view of the detailed description of the invention, which is to be taken in conjunction with the accompanying drawings that illustrate only some, but not all, of the embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The dry heat river valley has rich photo-thermal resources, drought and less rain, has good tropical fruit tree development advantages, but has bad terrain environment, barren soil and larger land arrangement difficulty, especially in recent decades, as the national living standard is improved, people have improved the agricultural output requirement, the hot area land resources are very short, and how to improve the utilization efficiency of limited land resources is an essential way for the modern agriculture development in the future. Therefore, the applicant proposes a method for mixing the Australian and sweet oranges in the dry and hot valley region.

1 Environment selection

The invention is suitable for flat land or gentle slope land below 5 degrees in tropical and subtropical areas, the average annual temperature is 20-26 ℃, the extremely low temperature is more than 5 ℃, and the average annual rainfall is 400-1000 mm.

2 soil preparation and planting planning

Weeds, sundries, stones and the like which are in the garden and have the influence of cultivation are removed, the whole field is turned deeply for 0.8m to 1.0m, the soil blocks are raked and leveled after the field is exposed for one month, the direction of the wind (generally north-south direction) is determined as the direction of planting rows, mango is planted according to 3m multiplied by 6m plant row spacing calibration, and the sweet orange is planted according to 2m plant spacing calibration along the middle of 2 rows of mango. After scaling, digging planting holes with lengths, widths and depths of 0.8m×0.8m×0.6m respectively.

3 planting management technology

3.1 Aoan mango

3.1.1 preparation before planting

Surface soil and bottom soil are piled up separately during digging holes, the surface soil is returned to the lower layer for 20cm before field planting, then 20kg of farmyard manure, 2kg of calcium superphosphate and 0.5kg of compound fertilizer are fully and uniformly mixed and returned to the middle layer, the bottom soil is returned to the upper layer, and the soil is filled to be 10-20 cm higher than the ground, and after 30d, the soil is submerged, the field planting can be performed.

3.1.2 field planting

The mango seedlings are planted by adopting 1-year-old Ma Qiesu or chickpea seedling nutrition bag seedlings, cutting off tender tips before field planting, cutting off the tender tips, keeping the cut openings above the dense knots, fully and uniformly mixing surface soil and middle layer soil of planting holes at the height of 40 cm-50 cm, removing seedling bags, digging small holes for planting, and setting planting depth is based on the condition that the surface soil covers the nutrition bags by 5-8 cm.

3.1.3 post-field management

And (3) after field planting, a round flat tree tray with the radius of 0.8-1.0 m is used, a dropper technology is used for irrigation, root fixing water is irrigated immediately after planting, and then the irrigation is carried out once every 3d, the irrigation quantity is not excessive, the tree tray is moist, the times of irrigation and the irrigation quantity after sprouting of seedlings are determined according to the climate condition, and the soil is kept moist.

3.1.4 fertilizer Water management

3.1.4.1 fertilizer

A: the fertilizer for young trees is mainly nitrogen and phosphate fertilizers, and is properly matched with potash fertilizers, calcium superphosphate, farmyard fertilizers and the like to be mainly applied as base fertilizers, and the top dressing is mainly nitrogen fertilizers. Topdressing is started after the tips are pulled out for 1-2 times after planting, the topdressing principle is that a small amount of topdressing is carried out for many times in 3, 5, 7 and 9 months, the topdressing compound fertilizer is applied in 9 months, and the organic fertilizer is applied in 6-8 months by combining green pressing and hole expanding, and the fertilizer is farmyard manure, organic fertilizer, soil and impurity fertilizer, oil cake and the like. The fertilizer consumption is doubled in the next year.

B: the fertilizer for fruit tree is mainly nitrogen fertilizer and potassium fertilizer, and the dosage of potassium is not less than that of nitrogen, and the fertilizer for phosphorus, calcium and magnesium is matched to make four times of fertilizer application.

Flower forcing fertilizer: applying 250g of urea, potassium sulfate and compound fertilizer to each plant for 10-11 months, increasing the crown and correspondingly increasing the fertilizing amount;

flowers-reducing fertilizer: trace element water-soluble fertilizer is applied for 1 time after flowers are removed;

fruit strengthening fertilizer: about 30d after flowers are removed is the rapid growth period of the fruit, also the spring tip extraction period of young fruiting trees, and nitrogen and potassium water-soluble fertilizers are applied for 1-2 times;

3.1.4.2 moisture management

Watering once about 15d after the field planting survival. The fruiting trees are irrigated thoroughly for 1-2 times before sprouting and flowering, the watering is carried out according to the soil water shortage condition in the flowering period, the watering is carried out once every 7-10 d, the watering quantity is increased in the growth period of young fruits after flowers are removed, and the watering is carried out once every 5-7 d, so that the normal growth and development of the flowering and young fruits and the new tip extraction are ensured; and accumulated water in the orchard is timely discharged during the rainy season, so that root growth is facilitated, and the damage of diseases and insects is reduced.

3.1.5 trimming

3.1.5.1 sapling

After the new buds of the stock seedlings germinate, 3-4 robust branches with similar growth vigor are selected and reserved in different directions for grafting, and redundant branches are cut off. When branches grow to 1.5-2.0 cm in 7-8 months of the next year, scions of Aoan are grafted by a split grafting method at 10-15 cm above the branches, robust upright branches which are semi-mature in the current year are selected as scions, 5-7 bud eyes are reserved for each scion, and after grafting wounds heal firmly, the plastic film is taken down or cut.

After the scion survives and germinates, 3-4 new spikes with vigorous growth vigor and moderate positions are reserved as main branches for each scion, and crossing tips, excessively dense tips and weak tips are removed. And when the main branches germinate slightly for three times, the core is plucked, the branches are promoted, 3 branches with similar growth vigor are selected to be reserved as auxiliary main branches, the auxiliary main branches are truncated when the auxiliary main branches grow to 40 cm-50 cm, and 3 secondary main branches on the second layer are reserved as fruiting parent branches of the first year of production. For strong branches with bare growth, it is preferable to cut off, promote branching, to maintain the dependency of branches, cut off upright branches, crossing or overlapping branches, cut off inflorescences after flowers are cut off for main branches that bloom in the next year of grafting. 50-60 fruiting parent branches which grow robustly but not overgrowth can be cultivated three years after the stock is planted, so that a stuffy round crown with good illumination is formed.

3.1.5.2 fruit tree

Pruning the fruiting tree is mainly performed four times, namely, before flower buds differentiate, dense branches, weak branches, diseased insect branches, crossing and overlapping, cutting off long branches, increasing the transparency of tree crowns and promoting flower bud differentiation are thinned out for the first time. After physiological fruit drop, cutting off pedicel and branches which affect fruit development, thinning out malformed fruits, pest fruits and too small abortive fruits, and keeping 1-2 fruits with normal development in one ear. And after fruit picking, the first layer secondary main branch or the second layer secondary main branch or the fruiting branch is cut in time, retracted to the position 0.9-1.0 cm away from the main branch of the trunk, the aged branches are pruned, the cut is made, and the part of the main branch with proper position is reserved for the overgrowth branch, so that the first layer secondary main branch and the second layer secondary main branch are updated year by year, and after the cut is retracted, the height of the tree body is kept about 1.5m, and the crown width is 1.5-1.8 m. After the third chopping and retracting, the number of new tips sprouting is more, the fourth pruning is carried out after one tip aging, the excessive density, the crossing, the overlapping, the weak yin, the inverted length and the pest tips are removed, and 80-90 new tips which are uniformly distributed, fully developed and vertically or semi-vertically grown are reserved for each plant.

The tree body with the branches aged after more than 10 years can be re-cut, updated and rejuvenated, the tree body is cut at a grafting opening after being harvested, the stock branch group is re-cultivated, the root system is correspondingly cut, new roots are promoted, the tree body is re-grafted 7-8 months after the next year, and the tree body can be put into production after 1.5 years.

3.1.6 fruit bagging

Bagging after trimming and thinning fruits of the second time, and adopting an opaque double-layer kraft paper bag, wherein one bag is used for one fruit, and the bag is taken for coloring 15-20 days before picking.

3.1.7 Main diseases and insect pests and control method

Powdery mildew: spraying sulfur, thiophanate methyl, triamcinolone acetonide, lime sulfur and the like in bud extraction and real-time period of the rhodomyrtus tomentosa;

gummosis, termite: after the rainy season is finished, lime is matched with lime sulfur agent, dimethoate is coated dry, and the coating dry height is 1m;

fruit fly of citrus: bagging fruits and trapping and killing;

spodoptera exigua (L.) kurz: cleaning a garden after fruit picking and trimming, and spraying abamectin, chlorpyrifos, dimethoate and the like in a young tip germination period and an inflorescence bud extraction period;

mango gall midge, cut She Xiangjia, leaf-of-beak leafhopper, longicorn: spraying abamectin, chlorpyrifos, dimethoate and the like for 3-4 times in summer and autumn of 6-9 months in a later germination period;

aphids: spraying imidacloprid on young shoots in the germination period of the dry season;

locust: spraying chlorpyrifos and dimethoate for 3-4 months;

the round shield scale: and (5) cleaning the garden after fruit picking and pruning, and spraying new pesticide on the whole plant and the ground.

3.2 sweet orange

3.2.1 field planting

2m plant spacing calibration is carried out along the middle of 2 rows of mangoes, after calibration, planting holes with the length, the width and the depth of 0.8m multiplied by 0.6m are dug, surface soil and bottom soil are piled up separately when digging pits, 10-15 kg of farmyard manure, 0.5kg of lime-magnesia phosphate fertilizer and 0.5kg of lime are put in each pit, weeds and lime are put in the bottom layer when returning to the pits, farmyard manure, phosphate fertilizer and surface soil are put in the middle layer, the bottom soil is put in the upper layer, the planting holes are 10-20 cm higher than the ground after backfilling, and after 30d, the soil disc is submerged, the field planting can be carried out. The tropical zone and the subtropical zone can be planted after the young shoots are mature and before the next young shoots germinate, and the planting survival rate is highest in spring planting and rainy season, and 56-110 plants are planted per mu. Digging small holes for field planting, placing the seedlings in the middle of planting holes, naturally expanding root systems, keeping the seedlings vertical to the ground, slightly lifting the seedlings upwards while backfilling soil, compacting, exposing a grafting port to about 5cm of the soil surface, and fully watering root fixing water after planting, and supplementing and filling for 1 time according to weather conditions for 7-10 days.

3.2.2 fertilizer Water management

After field planting, intertillage weeding is combined for 1-2 months, thin fertilizer is applied, fertilizer is applied for 2 times per month, 50-60 g of nitrogen fertilizer and compound fertilizer are applied to each plant, farmyard manure is dug and applied for 1 time per year after half a year, and 5-10 kg of farmyard manure is applied to each plant. The fruiting tree is combined with intertillage weeding and fertilized for 3-4 times each year, and different amounts of nitrogen, phosphorus and potassium fertilizers are added based on organic fertilizers. The water is irrigated in the spring drought, autumn and winter in dry season, and the water is sprayed on the leaves in the flowering phase when the leaves meet high temperature.

3.2.3 trimming

After field planting, the seedling trunk is picked up when the height is 40-50 cm, 3-4 branches which are strong in growth and uniform in azimuth distribution are selected as main branches, the distance between the main branches is kept to be 6-8 cm, most of the trunk branches of the young tree are summer tops and autumn tops, the long trunk branches are picked up or cut off, 8-12 leaves are reserved, and the length is 28-40 cm, so that the main branches are cultivated to develop uniformly, and a strong skeleton and a plump natural dome-shaped crown are formed. The buds should be removed after 1-2 years of young tree period, the dense branches, the shading branches, the thin and weak branches are properly removed in the following years, and the long branches are properly cut off to promote branching and advance fruiting.

The shaping and pruning of the fruit tree is to culture high-quality fruiting parent branches with emphasis, and the shaping and the pruning are carried out according to the principles of 'spring shoots are reserved as appropriate, summer shoots are pruned, autumn shoots are uniformly planted and winter shoots are strictly controlled'. Erasing the scattered sprouts to promote more, tidy and strong sprouts, and keeping 6-7 leaves on the overabundant branches for picking the heart and 2-3 strong sprouts in different directions when the spring tips grow to 5cm according to the principles of loose, dense, thin, short, long, weak and strong; xia Shao and young fruits compete for nutrients to cause a large number of fallen fruits, and the fruits are timely erased at the position of 3-5 cm, picked 1 time every 7-10 days, and picked to the late 6 months or 15 days before autumn tips are put; the first 8 months to the last 9 months can spat the sporadic buds, and the tree vigor is weaker and can be used for a small amount of late autumn shoots; the winter tips are all scraped off, the winter pruning is mainly carried out with reasonable distribution of ventilation, light transmission and branch tips and compact tree crowns.

3.2.4 pest control

Yellow dragon disease: finding out the disease plants, immediately digging out, and replanting strong seedlings; closely preventing and controlling psyllids;

gummosis: cleaning the garden after fruit picking in autumn, and coating quicklime with a lime-sulfur mixture;

leaf miner: spraying and killing avermectin, cypermethrin, phoxim, dimethoate and other pesticides;

butterfly: spraying and killing pesticides such as abamectin, dimethoate, cypermethrin and the like;

red spider: spraying and killing pesticide such as chlorfenapyr, phoxim, mineral oil, and hexetil;

scale insect: feeding and placing the biological control of the ladybug in Australia and the ladybug in scarlet or the spray killing of the new pesticide;

longicorn: the method is characterized in that adults are killed, eggs are killed, phoxim or 80% dichlorvos stock solution can be injected into insect holes, and the holes are sealed by mud.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A mixed planting method of Aoan and sweet oranges in a dry-heat valley area is characterized in that mango seedlings and sweet oranges are planted in an interlaced mode, aoan scions are grafted on mango seedling branches, main branches and auxiliary main branches are reserved according to round crown, a second layer of auxiliary main branches serve as fruiting branches, and the fruiting trees are trimmed four times per year;

the mango seedlings adopt 1-year-old Ma Qiesu or chickpea mango seedling nutrition bag seedlings; cutting off the top of the mango seedlings before field planting, cutting off tender tips, and cutting the openings above the dense joints; planting mango seedlings according to 3m multiplied by 6m plant row spacing calibration, and planting oranges according to 2m plant row spacing calibration along the middle of 2 rows of mangoes;

after the scion survives and germinates, 3-4 new branches with vigorous growth vigor and moderate positions are selected and reserved as main branches for each scion, crossing points, excessive dense points and weak points are removed, the scions are promoted to branch when the main branches germinate slightly for three times, 3 branches with similar growth vigor are selected and reserved as auxiliary main branches, the auxiliary main branches are truncated when growing to 40 cm-50 cm, and 3 secondary main branches on the second layer are reserved as fruiting parent branches in the first year of production;

before flower bud differentiation, thinning out dense branches, weak branches, pest branches, crossed branches and overlapped branches, and cutting off long branches; after physiological fruit dropping, cutting off pedicel and branches which affect fruit development, and thinning off malformed fruits; after fruit picking, the secondary main branches or fruiting branches of the first layer and the second layer are cut off in time, aged branches are cut off, and part of the branches with proper positions on the main branches are cut off and reserved for updating and replacing the secondary main branches of the first layer and the second layer year by year; after slightly aging in autumn, the fourth pruning is performed to remove excessive density, crossing, overlapping, yin weakness, overlength and disease and insect slightly; the aged tree body of the Aoan branch is subjected to re-cutting, renewing and rejuvenating, and is cut at a grafting opening after harvesting, and the stock branch group is re-cultivated.