CN111527964A

CN111527964A - Alternate updating method for Or citrus shade garden

Info

Publication number: CN111527964A
Application number: CN202010289225.9A
Authority: CN
Inventors: 黄桂香; 李峰; 吴宗猛; 黄运鹏; 黄世炎
Original assignee: Guangxi University
Current assignee: Guangxi University
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2020-08-14

Abstract

The invention discloses a method for alternately updating an Or shade garden, which comprises the following operation steps of (1) performing alternate re-retraction trimming after fruits are ripe and harvested in the current year and retracting to the position of a backbone branch; (2) after spring shoots germinate and spread leaves, selecting and reserving 3-4 robust buds which are uniformly distributed in different directions; (3) picking off the core and shearing the top after the spring shoots are mature, selecting and reserving 2-3 strong early summer shoots in different directions on each spring shoot, and culturing late summer shoots by the same method; (4) when late summer shoots are eighty-percent mature, pinching, promoting autumn shoots by the same method, and culturing mother branches with good results; (5) bending and pulling branches of each batch of branches with over-vigorous shoot growth or upright shoots to inhibit excessive growth; (6) when the autumn shoots grow to about nine matures, the paclobutrazol is sprayed on the leaf surfaces to promote the flowering. The method can realize alternate updating and result of the Or shade garden, and simultaneously keep the aims of ventilation and light transmission of the orchard and stable yield and high quality; yield losses from permanent thinning or wholesale renewal can also be avoided.

Description

Alternate updating method for Or citrus shade garden

Technical Field

The invention relates to the technical field of orange shading garden modification, in particular to a technical method for alternately updating an orange shading garden.

Background

The hybrid citrus fruit trees of the Wo citrus line have large branch tip growth amount, early fruiting and high yield, and the planting density commonly used in production is 83-110 plants/mu. In recent years, the Wo citrus has high market price and good economic benefit, and the fertilizer investment of farmers is large. The branches can be sealed in the second year of fruiting generally, most orchards begin to shade in the third year of fruiting, ventilation and light transmission are affected, the citrus reticulata is susceptible to canker, long and hard thorns grow on the branches, field management is inconvenient after the plants are sealed and shaded, and due to the shortage of labor force in the rural areas, the difficulty in pruning the whole garden is high, the trees are prone to rapid decline, plant diseases and insect pests are bred, the yield is low or no, and the quality is poor.

In addition, due to serious harm of citrus yellow shoot, virus disease and the like and phenomena that the citrus woolly is easy to bear fruit in different years, premature permanent thinning has great influence on yield, and the citrus woolly is unacceptable for growers. Thus. The alternate updating is a better method for modifying the Wo citrus shaded orchard.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

Aiming at the technical problems, the invention provides a method for alternately updating the Wo citrus shading garden, which adopts an alternate method, the alternate result is a method for effectively modifying the Wo citrus shading garden, and the purposes of alternately updating the Wo citrus shading garden and maintaining ventilation, light transmission and stable yield and high quality can be realized.

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

a method for alternately updating an Or shade garden comprises the following operation steps:

(1) performing interlaced re-shrinking pruning after the fruits are ripe and harvested in the current year (between 1 and 2 months), and keeping rows and plants at the sides and shrinking to the bone trunk and branches;

(2) after spring shoots germinate and spread leaves, selecting and reserving 3-4 robust buds distributed uniformly in different directions, wherein the directions of all the buds are not overlapped, and all the other new shoots are erased;

(3) picking off the core and cutting the top after the spring shoots are aged, promoting the early summer shoots, after the early summer shoots expand leaves, reserving 2-3 robust early summer shoots in different directions on each spring shoot, and culturing the late summer shoots by the same method;

(4) when late summer shoots are medium-ripe, pinching, promoting autumn shoots by the same method, quickly forming new fruiting crowns, and cultivating good fruiting mother branches;

(5) bending and pulling branches of each batch of branches with over-vigorous shoot growth or upright shoots to inhibit vain growth so as to facilitate flowering and fruiting in the next year;

(6) when the autumn shoots grow to about nine matures, spraying paclobutrazol on the leaf surfaces for 1-2 times to promote flowering;

(7) the fertilizer and water management is the same as that of the unretracted recutted trees;

(8) paying attention to pest control when each batch of shoots are extracted, wherein the method is the same as that of the re-cut trees which are not retracted;

(9) the citrus reissue pruning trees in the second year are retracted again, so that the citrus reissue trees can blossom and bear fruits, a certain yield and a good crown are formed, and the yield of normal bearing trees is reached year by year in the third year;

(10) and (4) after the fruits are ripe and harvested in the fourth year, performing reconversion pruning on the plants (rows) which are not subjected to reconversion and reconversion in the Wo citrus shading garden according to the steps (1) to (6), and realizing the alternate renewal and rejuvenation of the whole garden.

Preferably, the part retracted to the bone trunk branches in the step (1) is 40-50cm high, and high-quality spring shoots are promoted to germinate.

Preferably, after the spring shoots are aged in the step (3), pinching and topping are respectively carried out at the positions of 20-25 cm.

Preferably, pinching is carried out at a position of 20-25cm when the late summer is eight-ripe.

Preferably, the paclobutrazol diluted 1000 times and 25% suspending agent is sprayed on the leaf surface for 1 to 2 times in the step (6).

Preferably, the pest control in the step (8) is to pay attention to the prevention and control of citrus pests such as leaf miner, aphid, psylla and canker, anthracnose and the like for each batch of young shoots.

Compared with the prior art, the invention has the following beneficial effects:

the rotation result is an effective method for modifying the Wo citrus shading garden, so that the purposes of alternately updating and obtaining the Wo citrus shading garden can be realized, and the purposes of ventilation and light transmission of an orchard and stable yield and high quality are simultaneously maintained; yield losses from permanent thinning or wholesale renewal can also be avoided.

Drawings

FIG. 1 is a view of an orange shading garden.

FIG. 2 is a schematic diagram of the alternate updating method of the Or shade garden of the invention.

Fig. 3 is a diagram of a re-retraction trim according to the method of the present invention.

Detailed Description

The following detailed description is to be read in connection with the accompanying drawings, but it is to be understood that the scope of the invention is not limited to the specific embodiments. The reagents used in the examples were all those obtained on the market unless otherwise specified.

Example 1

(1) carrying out alternate row re-retraction pruning on the Wo citrus shaded garden after the fruit is ripe and harvested in the current year, namely, carrying out untreated treatment on the 1 st, 3 rd, 5 th, 7 th, 9 th and … … th rows, and carrying out re-shearing retraction on the 2 nd, 4 th, 6 th, 8 th, 10 th and … … th rows, wherein the side rows and the side plants are reserved (as shown in figure 2, and as shown in figure 2, the conventional pruning temporary stay strain; and as shown in figure 2, the re-retraction strain) and are retracted to the bone stem branches (as shown in figure 3) with the height of 40-50 cm;

(2) after spring shoots of the re-cut and retracted Or citrus trees germinate and spread leaves in spring of the year, selecting and reserving 3-4 robust buds distributed uniformly in different directions, wherein the directions of each bud are not overlapped, and the rest new shoots are all erased;

(3) in summer in the year, newly growing tips, namely summer tips, of the re-sheared and retracted Wo citrus trees on the basis of spring tips, picking off and shearing the tops at positions of 20-25cm respectively after the spring tips are aged for promoting early summer tips, reserving 2-3 robust early summer tips in different directions on each spring tip after the early summer tips are spread, and culturing late summer tips by the same method;

(4) in autumn of the year, when late summer shoots are eight-ripe, pinching is carried out at a position of 20-25cm, and the same method is adopted, namely the recut retracted woolly orange trees germinate new shoots, namely the autumn shoots, on the basis of the late summer shoots, the end thinning and the retention are carried out on the autumn shoots of the recut retracted woolly orange trees, the autumn shoots are cultivated, new fruiting crowns are quickly formed, and good fruiting mother branches are cultivated;

(6) when the autumn shoots are about nine times mature, spraying paclobutrazol diluted by 1000 times and 25% suspending emulsion on the leaf surfaces for 1-2 times to promote flowering;

(8) and (3) pest control: each group of tips pay attention to prevention and control of citrus diseases and insect pests such as leaf miner, aphid, psylla, canker, anthracnose and the like;

Comparative example 1

And (4) conventionally planting, wherein after fruits are harvested during pruning, each tree is pruned to remove insect-resistant branches, dead branches and excessively shaded big branches.

The yields in 1-2 years of the re-retraction revamping using the method of the invention compared to comparative example 1 are shown in table 1:

the foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. A method for alternately updating an Or shade garden is characterized by comprising the following operation steps:

(1) performing alternate re-retraction pruning after the fruits are ripe and harvested in the current year, and reserving plants on the same row and the same side, and retracting the plants to the bone trunk and branch positions;

(6) when the autumn shoots grow to nine-harvest maturity, spraying paclobutrazol on the leaf surfaces for 1-2 times to promote flowering;

(10) and (4) after the fruits are ripe and harvested in the fourth year, performing re-retracting pruning on the plants which are not subjected to re-pruning and retracting in the Wo citrus shading garden according to the steps (1) to (6), and realizing the alternate updating and rejuvenation of the whole garden.

2. The method of claim 1, wherein: retracting to the position of the bone trunk branches in the step (1), wherein the height is 40-50cm, and promoting germination of high-quality spring shoots.

3. The method of claim 1, wherein: and (4) after the spring shoots are aged in the step (3), pinching and shearing tops at the positions of 20-25cm respectively.

4. The method of claim 1, wherein: and (4) pinching at a position of 20-25cm when the late summer shoots are eighty percent ripe.

5. The method of claim 1, wherein: and (6) spraying and diluting paclobutrazol of 25% suspending agent 1000 times of the leaves on the surfaces of the leaves for 1 to 2 times.

6. The method of claim 1, wherein: and (4) the pest control in the step (8) is to pay attention to the prevention and control of citrus pests such as leaf miner, aphid, psyllid, canker, anthracnose and the like for each batch of young shoots.