CN113273428A

CN113273428A - Citrus canker control method and application thereof

Info

Publication number: CN113273428A
Application number: CN202110701505.0A
Authority: CN
Inventors: 张顺昌; 胡丽鹏; 占红木; 徐继根; 辛亮; 宋小明
Original assignee: Zhejiang Taizhou Agricultural Materials Co ltd
Current assignee: Zhejiang Taizhou Agricultural Materials Co ltd
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2021-08-20
Anticipated expiration: 2041-06-23
Also published as: CN113273428B

Abstract

The invention provides a method for preventing and treating citrus canker and application thereof, and relates to the technical field of agriculture. The method for preventing and treating the citrus canker is simple and low in cost. In addition, the medicaments adopted by the method comprise green glumes and copper preparations, wherein the green glumes not only have certain control effect on insect pests such as red spiders, rust ticks, diaphorina citri and the like, but also can be matched with the copper preparations for use, so that the control effect of the copper preparations on the citrus canker is further improved, and in addition, the beautiful and double-protection agent can be applied and matched with the green glumes and the copper preparations for use, so that the control effect on the citrus canker is improved. The method for preventing and treating the citrus canker has good application prospect in preventing and treating the citrus canker.

Description

Citrus canker control method and application thereof

Technical Field

The invention relates to the technical field of agriculture, in particular to a method for preventing and treating citrus canker and application thereof.

Background

The citrus canker is a bacterial disease which seriously harms citrus and is a target for plant quarantine at home and abroad. The pathogenic bacteria of citrus canker is a pathogenic variant of Flavobacterium carpocaulis of the genus Xanthomonas in the phylum of thin-wall fungi. In recent years, the disease has different degrees of occurrence and prevalence in Yunnan, Guangxi, Guangdong, Hainan, Taiwan, Fujian, Zhejiang, Jiangsu, Hubei, Hunan and Jiangxi provinces in China as well as parts of Sichuan and Guizhou, is easy to spread and difficult to control, and is a difficult problem in the production of citrus plants such as citrus. The epidemic areas in China mainly adopt chemical prevention and cure, and are assisted by comprehensive agricultural prevention and cure measures, but the prevention and cure effect is limited, and the occurrence of canker is still inevitable.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

The first purpose of the invention is to provide a method for preventing and treating citrus canker, which is simple and low in cost, can effectively avoid the citrus canker and realize the prevention and treatment of the citrus canker.

The second purpose of the invention is to provide an application of the citrus canker control method in citrus canker control.

In order to solve the technical problems, the following technical scheme is adopted:

in a first aspect, the present invention provides a method for controlling citrus canker, comprising the steps of:

spraying medicaments at the beginning of a spring shoot period, the beginning of a young fruit period, the beginning of a late summer shoot period and the beginning of an autumn shoot period of the citrus respectively;

the agents include greenwood and copper agents.

As a further technical scheme, the pesticide is independently sprayed for 2 to 4 times, preferably 3 times at the beginning of the spring shoot stage, the young fruit stage, the late summer shoot stage and the autumn shoot stage of the citrus.

As a further technical scheme, the pesticide is sprayed at the beginning of the spring shoot period, and the time intervals of spraying the pesticide are respectively and independently 15-20 days, preferably 20 days;

preferably, the first-time sprayed medicament at the beginning of the spring shoot stage further comprises Liweishuangbao, and the dilution factor of the Liweishuangbao in the medicament is 450-550, preferably 500;

preferably, the medicament sprayed for the second time at the beginning of the spring shoot period further comprises Liweishuangbao and Huzhuang, and the dilution times of Liweiling or Huzhuang in the medicament are respectively and independently 450-550, preferably 500;

preferably, the agent sprayed for the third time at the beginning of the spring shoot period further comprises Liweishuangbao and Huzhuang, and the dilution times of the Liweishuangbao and Huzhang in the agent are respectively and independently 450-550, preferably 500;

preferably, the spring shoot growth is 1-1.5cm, preferably 1.5cm, at the beginning of the spring shoot period.

As a further technical scheme, the pesticide is sprayed at the beginning of the young fruit period, and the time intervals of spraying the pesticide are respectively and independently 15-20 days, preferably 15 days;

preferably, the first-time sprayed medicament at the beginning of the young fruit period further comprises livistin and Huzhuang, and the dilution times of the livistin and the Huzhuang in the medicaments are respectively and independently 450-550, preferably 500;

preferably, the agent sprayed for the second time or the third time at the beginning of the young fruit period also comprises the livid fruit and the banker respectively and independently, and the dilution times of the livid fruit or the banker in the agent are respectively and independently 450-550, preferably 500;

preferably, the young fruit period begins 18-22 days, preferably 20 days after flower metabolism.

As a further technical scheme, the pesticide is sprayed at the beginning of late summer tip, and the time intervals of spraying the pesticide are respectively and independently 10 to 15 days, preferably 15 days;

preferably, the first sprayed medicament at the beginning of late summer season further comprises livid-paul, and the dilution factor of livid-paul in the medicament is 450-550, preferably 500;

preferably, the agent sprayed for the second time at the beginning of late summer shoot period further comprises lividne, and the dilution factor of lividne in the agent is 450-550, preferably 500;

preferably, the agent sprayed for the third time at the beginning of the late summer shoot period further comprises at least one of lividone fruits or Fengyu fruits, and the dilution multiple of the lividone fruits in the agent is 550-;

preferably, the late summer shoot period begins as long as 0.8-1.2cm, preferably 1 cm.

As a further technical scheme, the pesticide is sprayed at the beginning of the autumn tip period, and the time intervals of spraying the pesticide are respectively and independently 15-20 days, preferably 20 days;

preferably, the first sprayed medicament at the beginning of the autumn tip period further comprises livid-shigaku, and the dilution factor of livid-shigaku in the medicament is 450-550, preferably 500;

preferably, the agent sprayed for the second time at the beginning of the autumn tip period further comprises livistin, and the dilution factor of the livistin in the agent is 450-550, preferably 500;

preferably, the third sprayed medicament at the beginning of the autumn tip period further comprises at least one of Liweishuangbao or Fengyu, and the dilution factor of Liweishuangbao in the medicament is 450-;

preferably, the beginning of the autumn shoot period is that the autumn shoot grows to 0.8-1.2cm, preferably 1 cm.

As a further technical scheme, the dilution factor of the green glume in the medicament is 180-220 times, preferably 200 times;

preferably, the copper formulation comprises boregjed;

the dilution factor of the borreiger is 550 times, preferably 500 times.

As a further technical solution, the medicament further comprises an insecticide;

preferably, the control object of the pesticide comprises at least one of aphids, thrips, leaf miners or psyllids.

As a further technical scheme, the method also comprises the step of controlling the late summer or autumn tips;

preferably, the shoots are smeared once every 8-12 days from the germination of the summer shoots and the late summer shoots are released.

In a second aspect, the invention provides the use of a method of controlling citrus canker in the control of canker in citrus.

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

the method for preventing and treating the citrus canker is simple and low in cost. The citrus canker pathogenic bacteria are not easy to infect young shoots and mature leaves which are just germinated, and are easier to infect young tissues between the young shoots and the mature leaves, so the method sprays medicaments respectively at the beginning of a spring shoot stage, the beginning of a young fruit stage, the beginning of a late summer shoot stage and the beginning of a autumn shoot stage of the citrus, and sprays the medicaments aiming at the easy-to-develop period of the citrus canker to better realize the control of the citrus canker.

The method for preventing and treating the citrus canker has good application prospect in preventing and treating the citrus canker.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a photograph of Voronoi at 6/14/2020 as provided in example 1;

FIG. 2 is a photograph of Wobbe at 6 months and 14 days 2020 as provided in comparative example 1;

FIG. 3 is a photograph of Voronoi at 8/20/2020 as provided in example 2;

FIG. 4 is a photograph of a Wobbe of comparative example 2 at 8 months and 20 days 2020;

FIG. 5 is a photograph of Voronoi at 11/27/2020 as provided in example 2;

FIG. 6 is a photograph of a Wo orange at 11 months and 27 days 2020 as provided in comparative example 2;

FIG. 7 is a photograph of a Wo orange at 7 months and 22 days 2020 as provided by comparative example 3;

FIG. 8 is a photograph of a comparison example 4 providing a sitagliptin at 7 months and 7 days of 2020;

fig. 9 is a photograph of the satsuma orange at 7 months and 7 days of 2020 provided by comparative example 5.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to embodiments and examples, but those skilled in the art will understand that the following embodiments and examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Those who do not specify the conditions are performed according to the conventional conditions or the conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.

such agents include, but are not limited to, glume and copper agents.

The germs only infect young tissues at a certain development stage, but not young shoots and mature leaves which just sprout. When young leaves of the young sprout start to attack when the young leaves reach 2/3 hours (30-40 days after sprouting), the incidence rate increases along with the growth of the young sprout, and before the young sprout is mature, when the leaves are completely extended but are still tender green (30-60 days after sprouting), air holes are formed most and are in an open stage, gaps are large, germs are easy to invade, and the highest peak of the attack is reached; when the young shoots are aged and the leaves are completely tanned, the air holes are not formed any more, the original air holes tend to be aged, the invasion of pathogenic bacteria is difficult, and the disease is basically stopped.

The young fruits begin to be infected when the transverse diameter is about lcm (about 30 days after flower withering), and the peak of disease attack is reached when the transverse diameter is about 3cm (60-80 days after flower withering); and then gradually decreasing until most of the fruits are colored to be yellow or the transverse diameter is about 6cm (210-220 days after flower withering), so that the diseases are not caused.

Therefore, the invention carries out the prevention and control measures of the key node canker at each tip (spring tip, late summer tip and autumn tip) and young fruit stage (20 days after blossom).

In some preferred embodiments, the agent is sprayed 2-4 times, for example, but not limited to, 2, 3 or 4 times, preferably 3 times, at the beginning of the spring, young fruit, late summer and autumn shoots of citrus, respectively.

In the invention, the medicament is sprayed for multiple times in the four periods, which is beneficial to prolonging the medicament effect of the medicament and better realizing the prevention and treatment of the ulcer disease.

In some preferred embodiments, the agent is sprayed at the beginning of the spring shoot period, each time interval for spraying the agent is independently 15 to 20 days, for example, but not limited to, 15 days, 16 days, 17 days, 18 days, 19 days, or 20 days, preferably 20 days.

Preferably, the agent sprayed for the first time at the beginning of the spring early stage further comprises livid-shuangbao, and the dilution factor of livid-shuangbao in the agent is 450-550, and for example, but not limited to, 450, 470, 490, 510, 530 or 550, preferably 500. Attention is also paid to the control of aphids and thrips, for example, by spraying insecticides against aphids and thrips.

Preferably, the agent sprayed for the second time at the beginning of the spring early stage further comprises livid and pau, and the dilution factor of livid or pau in the agent is respectively 450-. Attention is paid to the prevention and treatment of gray mold, for example, spraying a medicament for preventing and treating gray mold.

Preferably, the agent sprayed for the third time at the beginning of the spring early stage further comprises livid-pau and pau, and the dilution factor of livid-pau or pau in the agent is respectively 450-. Attention is paid to the prevention and treatment of gray mold, for example, spraying a medicament for preventing and treating gray mold.

Preferably, the spring shoot grows to 1-1.5cm at the beginning of the spring shoot stage, which may be, for example, but not limited to, 1cm, 1.1cm, 1.2cm, 1.3cm, 1.4cm or 1.5cm, preferably 1.5 cm.

In some preferred embodiments, the agent is sprayed at the beginning of the young fruit stage, each time interval of spraying the agent is independently 15-20 days, for example, but not limited to, 15 days, 16 days, 17 days, 18 days, 19 days, or 20 days, preferably 15 days;

preferably, the first spraying agent at the beginning of the young fruit period further comprises livistin and bermudar, and the dilution factor of livistin or bermudar in the agent is respectively 450-550, and for example, but not limited to 450, 470, 490, 510, 530 or 550, preferably 500;

preferably, the agent sprayed for the second time or the third time at the beginning of the young fruit period further comprises livid and berm, and the dilution factor of livid or berm in the agent is 450-550, for example, but not limited to 450, 470, 490, 510, 530 or 550, preferably 500;

preferably, the young fruit period begins 18-22 days after the flower withering, such as, but not limited to, 18 days, 19 days, 20 days, 21 days, or 22 days, preferably 20 days.

In some preferred embodiments, the agent is sprayed at the beginning of the late summer end, each time interval for spraying the agent is independently 10-15 days, such as but not limited to 10 days, 11 days, 12 days, 13 days, 14 days, or 15 days, preferably 15 days.

Preferably, the first spraying agent at the beginning of late summer season further comprises livid-shuangbao, and the dilution factor of livid-shuangbao in the agent is 450-550, and for example, but not limited to, 450, 470, 490, 510, 530 or 550, preferably 500. Attention is also paid to the control of leaf miners and psyllids, for example by spraying insecticides for controlling leaf miners and psyllids.

Preferably, the agent sprayed for the second time at the beginning of late summer shoot period further comprises livining, and the dilution factor of livining in the agent is 450-550, and for example, the dilution factor can be, but is not limited to, 450, 470, 490, 510, 530 or 550, and is preferably 500. And meanwhile, attention is paid to the control of the leaf miner, for example, the pesticide for controlling the leaf miner is sprayed.

Preferably, the agent sprayed for the third time at the beginning of late summer shoot period further comprises at least one of livid and Fengyu, and the dilution factor of livid in the agent is 450-550, for example, but not limited to 450, 470, 490, 510, 530 or 550, and preferably 500.

Preferably, the late summer shoot period begins as long as 0.8-1.2cm, for example, but not limited to, 0.8cm, 0.9cm, 1cm, 1.1cm or 1.2cm, preferably 1 cm.

In some preferred embodiments, the agent is sprayed at the beginning of the autumn-tip period, and the time intervals for spraying the agent are each independently 15 to 20 days, for example, but not limited to, 15 days, 16 days, 17 days, 18 days, 19 days, or 20 days, preferably 20 days.

Preferably, the first spraying agent at the beginning of the autumn tip period further comprises livid-shuangbao, and the dilution factor of livid-shuangbao in the agent is 450-550, and for example, but not limited to, 450, 470, 490, 510, 530 or 550, preferably 500. Attention is also paid to the control of leaf miners and psyllids, for example by spraying insecticides for controlling leaf miners and psyllids.

Preferably, the agent sprayed for the second time at the beginning of the autumn tip period further comprises livistin, and the dilution factor of livistin in the agent is 450-550, for example, but not limited to 450, 470, 490, 510, 530 or 550, preferably 500. And meanwhile, attention is paid to the control of the leaf miner, for example, the pesticide for controlling the leaf miner is sprayed.

Preferably, the third sprayed medicament at the beginning of the autumn-tip period further comprises at least one of livid-paul and cydia, and the dilution factor of livid-paul in the medicament is 450-550, for example, but not limited to 450, 470, 490, 510, 530 or 550, preferably 500;

preferably, the beginning of the autumn tip period is when the autumn tip grows to 0.8-1.2cm, for example, but not limited to, 0.8cm, 0.9cm, 1cm, 1.1cm or 1.2cm, preferably 1 cm.

The invention is preferably carried out by adopting a Guofu brand three-nozzle spraying mode, thus having good effect on improving the spraying operation quality. For the time interval of continuous spraying, the copper preparation, for example, has the drug effect of Bordetegere for 18 to 22 days, and the spraying interval generally does not exceed 20 days; it is not preferable to take more than 15 days at high temperature and high humidity, which mainly considers that the drug can shorten the attachment time on the surface of the plant leaf under high temperature condition.

In recent years, rapid progress is made in researching the inheritance and molecular mechanism of citrus canker resistance, and the pore density and pore structure of leaves become a physiological index of citrus variety resistance. The liviatilin, liviatilin and liviatilin are all liquid fertilizers, and have the advantages of quick absorption and high utilization rate. According to the invention, different nutritional agents are applied according to the nutrition requirements of different growth and development stages of citrus, wherein the livining is a liquid fertilizer formed by complexing calcium phosphate and plant amino acid, and the livining is sprayed or dripped on leaves, so that the energy required by the growth of the plant can be provided, the growth of the stem and leaves can be promoted, the flowering and fruit setting can be promoted, and the plant quality can be improved; the Liweishuangbao can obviously improve the chlorophyll content of citrus leaves, increase the thickness of the leaves and promote the aging of branches, and the inventor finds that the Liweishuangbao can improve the adhesion capability of the glume after being matched with the glume and the copper preparation for application, improve the control effect of the citrus on canker and improve the resistance capability of the citrus; the liviaminate is a liquid calcium fertilizer containing amino acid, and can supplement calcium element in fruits and improve the resistance of the fruits after being used.

In the invention, during the growth and development of the citrus, different reagents are applied according to the growth conditions of the citrus at different stages, for example, the growth of fruits is promoted by applying plumping; the Huzhuang is applied at the stage of the black spot disease.

In some preferred embodiments, the dilution factor of glufosinate in the agent is 180-fold 220-fold, such as but not limited to 180-fold, 190-fold, 200-fold, 210-fold or 220-fold, preferably 200-fold;

preferably, the copper formulation comprises boregjed;

the dilution factor of borreiger is 450-550 times, and for example, but not limited to, 450-times, 470-times, 490-times, 510-times, 530-times or 550-times, preferably 500-times.

In the invention, the application methods of the glume and the borrelid are further optimized and adjusted, and the glume is diluted by 200 times and the borrelid is diluted by 500 times for matching use, so that the control effect on the citrus canker can be further improved.

In some preferred embodiments, the medicament further comprises a pesticide;

preferably, the control object of the pesticide includes but is not limited to at least one of aphids, thrips, leaf miners or psyllids.

The pest and disease damage can also affect the control effect of the citrus canker, so the pest and disease damage needs to be controlled in the control process of the citrus canker. The object for controlling pests includes but is not limited to at least one of aphids, thrips, leaf miners or psyllids, or other pests known to those skilled in the art, and the corresponding pesticide is sprayed according to the period of different pests. The specific kind of the insecticide is not particularly limited, and those known to those skilled in the art can be used.

In some preferred embodiments, the method further comprises the step of controlling the late summer or autumn tips;

High temperature, high humidity, much rain and strong wind are beneficial to the occurrence and the prevalence of diseases. The disease is most serious in summer and young fruit in the whole year, and is mild in spring and young fruit in autumn. Diseases can be induced by unreasonable fertilization, excessive nitrogenous fertilizer application, leaf miner and the like.

Generally, the citrus fruits grow sporadically and irregularly. Therefore, the ulcer disease is continuously infected in summer, and the prevention and control are difficult. If the tip control is not carried out in a unified way, the damage of the ulcer disease is difficult to control at one time. Therefore, the invention adopts the mode that the shoots are smeared once every 10 days from the germination of the summer shoots, the late summer shoots are uniformly released, and then the autumn shoots are uniformly released. Thus, unified tip placing can be realized, and the spread of ulcer diseases is reduced. Meanwhile, tip control is unified, and the propagation of the leaf miner and the like to canker diseases is reduced.

The method for preventing and controlling citrus canker can effectively realize the prevention and control of the citrus canker, and has good application prospect in the prevention and control of citrus canker.

The invention is further illustrated by the following specific examples and comparative examples, but it should be understood that these examples are for purposes of illustration only and are not to be construed as limiting the invention in any way.

It should be noted that the Liweishuangbao Liweiling used in the present invention is from agricultural resources GmbH, Taizhou, Zhejiang province.

Example 1

Test site: guangxi Longan county Dingdang Town;

orange varieties: c, citrus fruit floating;

and (3) citrus control mode: the method provided by the invention is adopted for control, and the pesticide node and the pesticide formula are shown in table 1.

Table 1 citrus control method of example 1

Comparative example 1

Test site: guangxi Longan county Dingdang Town;

orange varieties: c, citrus fruit floating;

and (3) citrus control mode: the self-defense, pesticide application node and pesticide formula of the peasant household are shown in the table 2.

Table 2 citrus control method of comparative example 1

The observation records were made for example 1 and comparative example 2 citrus.

Observation time: year 2020, 6, 14;

and (3) test results: fig. 1 is a photograph of the woolly of example 1, and fig. 2 is a photograph of the woolly of comparative example 1. As can be seen from the pictures, the spring shoots of example 1 were not infected with ulcer disease, whereas the spring shoots of comparative example 1 were infected with ulcer disease; neither the fruits of example 1 nor comparative example 1 were infected with ulcers. The scheme plays a role in protecting spring tips before flowers are withered. In contrast, comparative example 1, which used the same agent of this protocol after flower withering, showed no fruit-infected canker disease.

Example 2

Test site: guangxi Taiping town;

orange varieties: c, citrus fruit floating;

and (3) citrus control mode: the method provided by the invention is adopted for control, and the pesticide node and the pesticide formula are shown in table 3.

Table 3 citrus control method of example 2

Comparative example 2

Test site: guangxi Taiping town;

orange varieties: c, citrus fruit floating;

and (3) citrus control mode: the self-defense, pesticide application nodes and pesticide formulas of the farmers are shown in the table 4.

Table 4 citrus control method of comparative example 2

1) Observation time: 20 days 8 month in 2020;

and (3) test results: fig. 3 is a photograph of the woolly of example 2, and fig. 4 is a photograph of the woolly of comparative example 2. And no canker lesions were found in both the spring shoots, summer shoots, autumn shoots and fruits of example 2; the lesions of the ulcer disease were found in both the spring shoots, summer shoots, autumn shoots and fruits of comparative example 2.

2) Observation time: 11 month and 27 days 2020;

and (3) test results: fig. 5 is a photograph of the woolly of example 2, and fig. 6 is a photograph of the woolly of comparative example 2. Moreover, no ulcerative lesions were found in any of the fruits of example 2; the fruit of comparative example 2 had ulcerated lesions.

Comparative example 3

Test site: a log base;

orange varieties: seedless Wo citrus 091 seedlings;

and (3) citrus control mode: the self-prevention scheme of farmers is used before late summer shoots, and the prevention scheme of the invention is uniformly used after later whistle release by uniformly picking buds, and the pesticide application nodes and the pesticide formula are shown in table 5.

TABLE 5 Citrus control method of comparative example 3

And observing and recording the comparative example 3 Wo orange.

Observation time: 22 months 7 in 2020;

and (3) test results: fig. 7 is a photograph of woolly orange of comparative example 3. As can be seen from the pictures, the spring shoots and early summer shoots of the whole garden are subjected to the self-defense scheme of farmers before the summer shoots, and the late summer shoots after unified tip control have no ulcer disease spots.

Comparative example 4

Test site: guangxi defense harbor city;

orange varieties: murcott;

and (3) citrus control mode: the method provided by the invention is used for preventing and treating the flowers before the flowers are withered, and the pesticide application nodes and the pesticide formula are shown in the table 6.

Table 6 citrus control method of comparative example 4

Comparative example 5

The difference from comparative example 4 is that 500 times of copper kasugao and 500 times of calcium copper sulfate were used alternately 6 times between 5 months and 7 days and 6 months and 29 days.

Observations were made for the ponkan of comparative example 4 and comparative example 5.

Observation time: 7 months and 7 days in 2020;

and (3) test results: fig. 8 is a photograph of the metallocene orange of comparative example 4. Fig. 9 is a photograph of the metallocene orange of comparative example 5. It can be seen from the pictures that the fruit of comparative example 4 is not infected with ulcer disease, whereas the fruit of comparative example 5 is infected with ulcer disease. And the aged spring shoots of comparative example 5 also had very few lesions of ulcer disease.

And (4) analyzing results: comparative example 4 started to protect the fruit 20 days after the flower withering. The area is a mountain area and the growth period of the variety is late, so the flower is withered for 20 days beginning at about 5 months and 7 days. At the young fruit stage, 4 cases are continuously used to control the occurrence of canker of the fruit. And at the moment, the spring shoots are in the spring shoot growth period, and because the early spring shoots cannot be timely prevented and controlled, a few canker scabs exist in the spring shoots, but the number of the canker scabs is less than that of the spring shoots in comparison with the comparative example 5.

Comparative example 6

Test site: guangxi defense harbor city;

orange varieties: c, citrus fruit floating;

and (3) citrus control mode: the difference from example 1 is that no Liweishuangbao is included in the pesticide formulation.

And observing and recording the Or of the comparison example 6.

Observation time: 20 days 8 month in 2020;

and (3) test results: while the summer tips of the wogonian in example 1 were not infected with ulcer disease, the summer tips of the wogonian of comparative example 6 were slightly infected with ulcer disease.

And (4) analyzing results: the Liweishuangbao, the copper preparation and the green glume are applied to the citrus in a matching way according to the method provided by the invention, so that the prevention and treatment effect on citrus canker can be further improved.

Example 3

A method for preventing and treating citrus canker comprises the following steps:

1. when the citrus spring shoots sprout, spraying a first medicament, wherein the medicament comprises the following components: glume 180 times, borrelid 450 times, livid 450 times, Fengya and pesticide;

spraying a second medicament after 15 days, wherein the medicament comprises the following components: 180 times of green glume, 450 times of Boraijie, 450 times of Liweishuangbao and auxiliary insect killing;

and spraying a third medicament after 15 days, wherein the medicament comprises the following components: 180 times of green glume, 450 times of Boraijie, 450 times of Liweishuangbao, 180 times of auxiliary insect killing and village protection;

2. after 20 days of flower withering of the citrus, spraying a first medicament which comprises the following components: 180 times of green glume, 450 times of borrelid, 450 times of livistin, 180 times of auxiliary insect killing and crop protection;

and spraying a second medicament after 15 days, wherein the medicament comprises the following components: 180 times of green glume, 450 times of Boraijie, 450 times of Liweiyou, 180 times of auxiliary insect killing and crop protection;

and spraying a third medicament after 15 days, wherein the medicament comprises the following components: 180 times of green glume, 450 times of borrelid, 450 times of liveyouyou, 180 times of auxiliary agent and 180 times of Zhuangzhuang;

3. smearing the shoots once every 10 days from the germination of the summer shoots, and uniformly releasing the late summer shoots;

after late summer shoots grow to 1cm, spraying a first medicament, wherein the medicament comprises the following components: 180 times of green glume, 450 times of Boraijie, 450 times of Liweishuangbao and auxiliary insect killing;

after 10 days, spraying a second medicament which comprises the following components: 180 times of Luoyangjie, 450 times of Boraijie, 450 times of livistin and auxiliary insect killing;

and spraying a third medicament after 10 days, wherein the medicament comprises the following components: 180 times of green glume, 450 times of Boraijie, 450 times of Liweiyou, Fengya and auxiliary insect killing;

4. unified autumn tip of emitting, treat that the autumn tip is long to 1cm after, unified spraying first medicament, the medicament composition becomes: 180 times of green glume, 450 times of Boraijie, 450 times of Liweishuangbao and auxiliary insect killing;

after 15 days, spraying a second medicament which comprises the following components: 180 times of green glume, 450 times of Boraijie, 450 times of livining, Fengya and auxiliary insect killing;

and spraying a third medicament after 15 days, wherein the medicament comprises the following components: luoyang 180 times, Boraijie 450 times, Liweishuangbao 450 times, Fengya and auxiliary insect killing.

Example 4

1. when the citrus spring shoots sprout, spraying a first medicament, wherein the medicament comprises the following components: 220 times of green glume, 550 times of borrelid, 550 times of livid, Fengya and an insecticide;

spraying a second medicament after 18 days, wherein the composition of the medicament is as follows: 220 times of green glume, 550 times of Boraijie, 550 times of Liweishuangbao and auxiliary insect killing;

and spraying a third medicament 18 days later, wherein the composition of the medicament is as follows: 220 times of green glume, 550 times of borrelid, 550 times of livid, auxiliary insect killing and 220 times of banker protection;

2. after 20 days of flower withering of the citrus, spraying a first medicament which comprises the following components: 220 times of green glume, 550 times of borrelid, 550 times of livisalin, auxiliary insect killing and 220 times of Jiangzhuang;

and spraying a second medicament after 18 days, wherein the composition of the medicament is as follows: 220 times of green glume, 550 times of Boraijie, 550 times of Liweiyou, 220 times of auxiliary insect killing and crop protection;

and spraying a third medicament after 18 days, wherein the composition of the medicament is as follows: 220 times of green glume, 550 times of borrelid, 550 times of liveyouyou, 220 times of auxiliary agent and 220 times of Huzhuang;

after late summer shoots grow to 1cm, spraying a first medicament, wherein the medicament comprises the following components: 220 times of green glume, 550 times of Boraijie, 550 times of Liweishuangbao and auxiliary insect killing;

after 12 days, spraying a second medicament which comprises the following components: 220 times of Luoyang, 550 times of Boraijie, 550 times of livisalin and auxiliary insect killing;

and spraying a third medicament after 12 days, wherein the medicament comprises the following components: 220 times of green glume, 550 times of Boraijie, 550 times of Liweiyou, Fengya and auxiliary insect killing;

4. unified autumn tip of emitting, treat that the autumn tip is long to 1cm after, unified spraying first medicament, the medicament composition becomes: 220 times of green glume, 550 times of Boraijie, 550 times of Liweishuangbao and auxiliary insect killing;

after 18 days, spraying a second medicament which comprises the following components: 220 times of green glume, 550 times of borrelid, 550 times of livining, Fengya and auxiliary insect killing;

and spraying a third medicament after 18 days, wherein the composition of the medicament is as follows: 220 times of Luoyang, 550 times of Boraijie, 550 times of Liweishuangbao, Fengya and auxiliary insect killing.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The method for preventing and treating citrus canker is characterized by comprising the following steps:

the agents include greenwood and copper agents.

2. The method for controlling citrus canker according to claim 1, wherein the agent is sprayed 2 to 4 times, preferably 3 times, independently at the beginning of each of the spring young, late summer young, and autumn young citrus.

3. The method for controlling citrus canker according to claim 2, wherein the chemicals are sprayed at the beginning of the spring early stage at intervals of 15 to 20 days, preferably 20 days, independently of each other;

4. The method for controlling citrus canker according to claim 2, wherein the chemicals are sprayed at the beginning of the young fruit stage at intervals of 15 to 20 days, preferably 15 days, independently of each other;

5. The method for controlling citrus canker according to claim 2, wherein the chemicals are sprayed at the beginning of late summer season at intervals of 10 to 15 days, preferably 15 days, independently of each other;

6. The method for controlling citrus canker according to claim 2, wherein the chemicals are sprayed at the beginning of the autumn shoot period at intervals of 15 to 20 days, preferably 20 days, independently of each other;

7. The method for controlling citrus canker according to claim 1, wherein the dilution factor of glume in the agent is 180-fold and 220-fold, preferably 200-fold;

preferably, the copper formulation comprises boregjed;

the dilution factor of the borreiger is 550 times, preferably 500 times.

8. The method for controlling citrus canker according to claim 1, wherein said agent further comprises an insecticide;

9. A citrus canker control method according to any one of claims 1 to 8, characterized by further comprising a step of controlling the late summer or autumn;

10. Use of the method for controlling citrus canker according to any of claims 1 to 9 for the control of canker in citrus plants.