CN111512907A - Seedling raising method for seedless watermelons - Google Patents

Seedling raising method for seedless watermelons Download PDF

Info

Publication number
CN111512907A
CN111512907A CN202010526889.2A CN202010526889A CN111512907A CN 111512907 A CN111512907 A CN 111512907A CN 202010526889 A CN202010526889 A CN 202010526889A CN 111512907 A CN111512907 A CN 111512907A
Authority
CN
China
Prior art keywords
seeds
seedling
seed
seedling raising
seedless
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010526889.2A
Other languages
Chinese (zh)
Inventor
刘晓宏
苏小俊
范家忠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Academy of Agricultural Sciences
Original Assignee
Jiangsu Academy of Agricultural Sciences
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Academy of Agricultural Sciences filed Critical Jiangsu Academy of Agricultural Sciences
Priority to CN202010526889.2A priority Critical patent/CN111512907A/en
Publication of CN111512907A publication Critical patent/CN111512907A/en
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G22/00—Cultivation of specific crops or plants not otherwise provided for
    • A01G22/05—Fruit crops, e.g. strawberries, tomatoes or cucumbers
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
    • A01C1/08—Immunising seed
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
    • A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
    • A01G24/12—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material containing soil minerals
    • A01G24/15—Calcined rock, e.g. perlite, vermiculite or clay aggregates
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
    • A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
    • A01G24/28—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing peat, moss or sphagnum

Abstract

The invention relates to a seedling raising method for seedless watermelons, and belongs to the technical field of agricultural planting. Comprises the steps of preparing a seedling culture substrate; seed selection, seed drying, seed soaking and shell breaking; sowing, accelerating germination and transplanting; seedling management and field planting. The invention aims to provide a seedling raising method for seedless watermelons, which has the advantages of high seed planting rate, reduced seed consumption, convenience in seedbed management and reduced seedling raising cost. The method is simple to operate and is suitable for being used as a seedless watermelon seedling culture method.

Description

Seedling raising method for seedless watermelons
Technical Field
The invention belongs to the field of agriculture, and particularly relates to a seedling raising method for seedless watermelons.
Technical Field
The watermelon is the first choice fruit for people to relieve summer heat, and the seedless watermelon is favored by consumers due to the advantages of beautiful appearance, bright red flesh, less fiber, high sugar content, multi-flavor and sweet juice, fine and smooth taste, good seedless property, excellent quality, sanitary and convenient eating and the like, and the market selling price of the seedless watermelon is far higher than that of the common watermelon.
The seed embryo of the seedless watermelon seed is a hybrid embryo and a polyploid embryo, and has the advantages of hybrid first generation and polyploid, and has the characteristics of strong growth potential, strong stress resistance, high quality, high yield and the like. The seeds required for cultivating seedless watermelons are triploid watermelon seeds. Triploid watermelon seeds have thick and hard seed shells of tetraploid seeds, and have high degree of lignification, particularly are thickened and have tight mouth in the beak part. The embryo is not completely developed, the weight of the embryo is low, the weight of the embryo only accounts for 38.5% of the weight of the seed (the weight of the diploid seed embryo accounts for 50%), the volume of the embryo accounts for 60-70% of the inner cavity of the seed shell, and meanwhile, a considerable proportion of abnormal embryos, such as large and small embryos and folded embryos, exist. For the reasons, under the natural germination state of the triploid seeds, radicles are not easy to drill out seed shells, so the germination rate and the seedling rate are both low, and the large-area popularization of seedless watermelons is greatly influenced. How to adopt effective measures to overcome the difficulties and improve the germination rate and the seedling rate of the seedless watermelon seeds is an important problem to be solved in the production and cultivation of the seedless watermelons.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a seedless watermelon seedling method, which is realized by the following technical scheme:
(1) seedling culture substrate preparation: the seedling substrate mainly uses grass carbon, the preparation ratio of the grass carbon to vermiculite is 2: 1 or 3: 1, and the grass carbon and the vermiculite are fully stirred to uniformly mix the seedling substrate. Before seedling culture, a bactericide is used for soil mixing and disinfection, wherein 20-25 g of 65% zineb, 20-25 g of 70% quintozene or 100-200 g of 50% chlorothalonil are added into each cubic meter of matrix. Adjusting the water content of the substrate to 55-60%. After stacking for 2-3 h, filling the substrate into a seedling raising tray or a seedling raising box, wherein the thickness is about 4 cm.
(2) Seed selection: the method is characterized in that high-quality, disease-resistant and high-yield varieties are selected, and seeds which are full and consistent in shape and have no disease spots and insect eyes are selected.
(3) Seed drying: uniformly spreading the seeds in the step (2) in a ceramic or iron flat plate, drying the seeds in a forced air drying incubator, and treating for 24 hours at 35 ℃, then for 24 hours at 55 ℃ and finally for 72 hours at 70 ℃ by adopting a gradual temperature rising method. Naturally cooling for later use.
(4) Seed soaking: soaking the seeds baked in the step (3) in warm water at about 55 ℃ while stirring, and soaking the seeds for about 6 hours after the water temperature is reduced to room temperature. And fishing out the soaked seeds, rubbing and washing the seeds to remove mucus on the surfaces of the seeds, and drying the seeds in the air.
(5) Shell breaking: and (4) lightly polishing the seeds in the step (4) along the hilum by using 400-500-mesh sand paper, and slightly cracking the seed shells.
(6) Sowing: uniformly sowing the watermelon seeds in the step (5) in a seedling culture medium, wherein the seeds are not overlapped, immediately watering thoroughly after sowing, then covering with fine soil, wherein the thickness of the fine soil is 1-2 cm, and then covering with a layer of mulching film for moisture preservation.
(7) Accelerating germination: and (4) putting the seeds sowed in the step (6) into a germination accelerating room or an artificial climate box for accelerating germination, wherein the environmental temperature is 28-33 ℃, and the relative humidity is more than 90%.
(8) Transplanting: and (3) stopping accelerating germination after the cotyledon is exposed with soil, carefully picking out the cotyledon with a flat bamboo stick with a width of 0.5-1.0 cm and a tapered front end, and transplanting the cotyledon into a hole tray with 50 holes for 1 hole.
(9) Seedling stage management: and (3) placing the plug seedlings transplanted in the step (8) on a seedling bed in a greenhouse for culturing, wherein the temperature is controlled to be 28-36 ℃ in the seedling stage and 22-25 ℃ in the first leaf stage. Sufficient illumination and ventilation are maintained, and the humidity in the shed is reduced.
(10) Planting: 2, planting the leaves in the field with more than 1 heart, watering thoroughly 1 day before planting, and spraying the bactericide on the leaf surfaces for 1 time.
The 70 percent thiophanate methyl wettable powder is used for preventing and treating diseases in the seedling stage by 5g/m2Or 99% hymexazol wettable powder 3g/m2～4g/m2Or 72.2 percent propamocarb hydrochloride 400-600 times of the solution is used for preventing and treating. And (3) spraying 70% imidacloprid water dispersible granules 7000-8000 times of liquid for prevention and control at the early stage of insect attack, and carrying out pesticide prevention and control on 5% acetamiprid missible oil 3000-4000 times of liquid and the like. When 5% of plants are damaged, 3000 times of 2.5% of ambroxol emulsifiable concentrate is used for spray control.
In seed-borne diseases, when pathogens invade the interior of seeds, the disinfection effect with the agent is poor. Through a plurality of tests, the invention discovers that the seed treatment method combining seed drying and seed soaking in warm soup can almost kill all germs in the seeds and inactivate viruses, and the method not only can sterilize, but also can promote the germination of the seeds and the growth of seedlings.
The seedless watermelon seed shell is thick and hard, has high cork degree, is particularly thickened and tight in mouth, and is difficult to germinate without processing seeds. The method for breaking the shell of the seedless watermelon seed is multiple, the method comprises the steps of clamping (clamping seed), cutting (cutting seed), shearing (cutting seed) and cracking (cracking seed) with the mouth, the most purpose is to crack the seed, but the strength of cracking the seed with the mouth is not easy to control, the seed is often cracked, damaged or cracked, and the method is not suitable for being widely used from the human hygiene. According to the method, 400-500-mesh sand paper is used for lightly polishing along the hilum to two sides until the seed shells are slightly cracked, so that the water permeability of the seed shells can be increased, the seed shells can be broken and germinate easily, the germination rate is improved, the method is simple and easy to operate, and the breaking force is easy to control.
The seedling raising method adopted by the invention has the advantages that the steps of soaking the seeds firstly and breaking the shells can effectively prevent the seed soaking time from being too long, water enters the seed shells, and simultaneously, pathogenic bacteria are brought in the seed shells, the seeds are easy to rot during germination accelerating, and the germination percentage is reduced. In addition, the seedling stage adopts higher temperature management, and the problems of low seedling rate, slow seedling growth and the like of seedless watermelons can be effectively solved.
Compared with the prior art, the invention has the technical effects that: the disease resistance of the seedling plant is strong, the transplanting survival rate is high, the problems of early germination, difficult seedling formation and the like of seedless watermelons in the current production are solved, the emergence rate is increased by more than 10%, the rotten seed rate is reduced, the seed consumption is saved by more than 15%, the operation is simple and easy, and the popularization is convenient.
Detailed Description
The technical solution of the present invention is further defined below with reference to the specific embodiments, but the scope of the claims is not limited to the description.
Example 1
A seedling raising method of seedless watermelons comprises the following steps:
(1) preparing a blind seedling substrate: the seedling substrate mainly uses grass carbon, the preparation ratio of the grass carbon to vermiculite is 2: 1 or 3: 1, and the grass carbon and the vermiculite are fully stirred to uniformly mix the seedling substrate. Before seedling culture, a bactericide is used for soil mixing and disinfection, wherein 20-25 g of 65% zineb, 20-25 g of 70% quintozene or 100-200 g of 50% chlorothalonil are added into each cubic meter of matrix. Adjusting the water content of the substrate to 55-60%. After stacking for 2-3 h, filling the substrate into a seedling raising tray or a seedling raising box, wherein the thickness is about 4 cm.
(2) Seed selection: the method is characterized in that high-quality, disease-resistant and high-yield varieties are selected, and seeds which are full and consistent in shape and have no disease spots and insect eyes are selected.
(3) Seed drying: uniformly spreading the seeds in the step (2) in a ceramic or iron flat plate, drying the seeds in a forced air drying incubator, and treating for 24 hours at 35 ℃, then for 24 hours at 55 ℃ and finally for 72 hours at 70 ℃ by adopting a gradual temperature rising method. Naturally cooling for later use.
(4) Seed soaking: soaking the seeds baked in the step (3) in warm water at about 55 ℃ while stirring, and soaking the seeds for about 6 hours after the water temperature is reduced to room temperature. And fishing out the soaked seeds, rubbing and washing the seeds to remove mucus on the surfaces of the seeds, and drying the seeds in the air.
(5) Shell breaking: and (4) lightly polishing the seeds in the step (4) along the hilum by using 400-500-mesh sand paper, and slightly cracking the seed shells.
(6) Sowing: uniformly spreading the soaked watermelon seeds in a seedling culture medium, not overlapping the seeds, immediately watering thoroughly after sowing, then covering with fine soil, wherein the thickness of the fine soil is 1-2 cm, and then covering with a layer of mulching film for moisture preservation.
(7) Accelerating germination: and (4) putting the seeds sowed in the step (6) into a germination accelerating room or an artificial climate box for accelerating germination, wherein the environmental temperature is 28-33 ℃, and the relative humidity is more than 90%.
(8) Transplanting: and (3) stopping accelerating germination after the cotyledon is exposed with soil, carefully picking out the cotyledon with a flat bamboo stick with a width of 0.5-1.0 cm and a tapered front end, and transplanting the cotyledon into a hole tray with 50 holes for 1 hole.
(9) Seedling stage management: and (3) placing the plug seedlings transplanted in the step (8) on a seedling bed in a greenhouse for culturing, wherein the temperature is controlled to be 28-36 ℃ in the seedling stage and 22-25 ℃ in the first leaf stage. Sufficient illumination and ventilation are maintained, and the humidity in the shed is reduced.
(10) Planting: 2, planting the leaves in the field with more than 1 heart, watering thoroughly 1 day before planting, and spraying the bactericide on the leaf surfaces for 1 time.
The 70 percent thiophanate methyl wettable powder is used for preventing and treating diseases in the seedling stage by 5g/m2Or 3-4 g/m of 99% hymexazol wettable powder2Or 72.2 percent propamocarb hydrochloride 400-600 times of the solution is used for preventing and treating. 70% imidacloprid water dispersible granule 7000-8000 times liquid spray control and 5% acetamiprid missible oil at initial stage of insect attack3000-4000 times of liquid and the like. When 5% of plants are damaged, 3000 times of 2.5% of ambroxol emulsifiable concentrate is used for spray control.
Comparative example 1: the difference from the embodiment 1 is that firstly, the dried seeds are lightly polished along two sides of the hilum by 400-500-mesh sand paper, and the seed shells are slightly cracked; soaking seeds in warm water at about 55 ℃ while stirring, and soaking seeds for about 6 hours after the water temperature is reduced to room temperature. And fishing out the soaked seeds, rubbing and washing the seeds to remove mucus on the surfaces of the seeds, and drying the seeds in the air.
Comparative example 2: the method is different from the example 1 only in that the germination temperature of the seeds in a germination room or a climatic chamber is 28 ℃, and the control temperature of the germination period is 25-32 ℃.
The seed soaking, disinfection, shell breaking and pregermination of the seeds before sowing are important means for improving the quality of seedless watermelon seedlings. Tests prove that in seedless watermelon seedling production, compared with comparative example 1 and comparative example 2, the seedling rate of the embodiment is increased by more than 15%, the morbidity in the seedling stage is reduced, and the seed consumption is saved by more than 22%. The embodiment has the advantages of strong plant, strong growth potential, developed root system, strong disease resistance and high transplanting survival rate of the commercial seedlings.
Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the technical solution of the present invention is not limited to the above-described embodiments, and many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.

Claims (5)

1. A seedling raising method for seedless watermelons is characterized by comprising the following steps:
(1) seedling culture substrate preparation: mixing with soil, and stirring to mix the seedling culture medium. And (3) before seedling culture, mixing soil with a bactericide for disinfection, and adjusting the water content of the matrix to 55-60%. After stacking for 2-3 h, filling the substrate into a seedling raising tray or a seedling raising box, wherein the thickness is about 4 cm.
(2) Seed selection: the method is characterized in that high-quality, disease-resistant and high-yield varieties are selected, and seeds which are full and consistent in shape and have no disease spots and insect eyes are selected.
(3) Seed drying: and (3) uniformly and flatly paving the seeds in the step (2) in a ceramic or iron flat disc, drying the seeds in a forced air drying incubator, and naturally cooling the seeds for later use.
(4) Seed soaking: soaking the seeds baked in the step (3) in warm water at about 55 ℃, stirring continuously, and soaking the seeds for 6 hours after the water temperature is reduced to room temperature. And fishing out the soaked seeds, rubbing and washing the seeds to remove mucus on the surfaces of the seeds, and drying the seeds in the air.
(5) Shell breaking: and (4) lightly polishing the seeds in the step (4) along the hilum by using 400-500-mesh sand paper, and slightly cracking the seed shells.
(6) Sowing: uniformly sowing the watermelon seeds in the step (5) in a seedling culture medium, wherein the seeds are not overlapped, immediately watering thoroughly after sowing, then covering with fine soil, wherein the thickness of the fine soil is 1-2 cm, and then covering with a layer of mulching film for moisture preservation.
(7) Accelerating germination: and (4) putting the sowed seeds into a germination accelerating room or an artificial climate box for accelerating germination.
(8) Transplanting: stopping accelerating germination after the cotyledon is exposed to soil, picking out, and transplanting into a hole tray with 50 holes for 1 plant in 1 hole.
(9) Seedling stage management: and (5) placing the plug seedlings transplanted in the step (8) on a seedling bed in a greenhouse for culturing, paying attention to temperature management, keeping sufficient illumination and ventilation, and reducing the humidity in the greenhouse.
(10) Planting: 2, planting the leaves in the field with more than 1 heart, watering thoroughly 1 day before planting, and spraying the bactericide on the leaf surfaces for 1 time.
2. The seedling raising method of seedless watermelon seeds as claimed in claim 1, wherein the seedling raising substrate in step (1) is prepared by mixing turf and vermiculite in a ratio of 2: 1 or 3: 1, and the bactericide is prepared by adding 65% of zineb 20-25 g, 70% of quintozene 20-25 g, or 50% of chlorothalonil 100-200 g to each cubic meter of substrate.
3. The method for raising seedlings of seedless watermelon seeds of claim 1, wherein the seed baking method in step (3) comprises the steps of treating at 35 ℃ for 24 hours, treating at 55 ℃ for 24 hours and treating at 70 ℃ for 72 hours.
4. The seedling raising method of seedless watermelon seeds as claimed in claim 1, wherein the germination accelerating environmental temperature in step (7) is 28-33 ℃, and the relative humidity is more than 90%.
5. The seedling raising method of seedless watermelon seeds as claimed in claim 1, wherein in the step (9), the temperature is controlled at 28-36 ℃ in the seedling emergence stage and 22-25 ℃ in the first leaf stage.
CN202010526889.2A 2020-06-10 2020-06-10 Seedling raising method for seedless watermelons Pending CN111512907A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010526889.2A CN111512907A (en) 2020-06-10 2020-06-10 Seedling raising method for seedless watermelons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010526889.2A CN111512907A (en) 2020-06-10 2020-06-10 Seedling raising method for seedless watermelons

Publications (1)

Publication Number Publication Date
CN111512907A true CN111512907A (en) 2020-08-11

Family

ID=71911512

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010526889.2A Pending CN111512907A (en) 2020-06-10 2020-06-10 Seedling raising method for seedless watermelons

Country Status (1)

Country Link
CN (1) CN111512907A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104686008A (en) * 2015-03-10 2015-06-10 塔里木大学 Method for breaking chenopodiaceae plant seed dormancy
CN106538104A (en) * 2016-11-03 2017-03-29 张晓峰 A kind of method for improving Flos Chrysanthemi percentage of seedgermination
CN108012801A (en) * 2018-01-24 2018-05-11 合肥申沃园艺有限公司 A kind of chrysanthemum culturing method
CN110235761A (en) * 2019-07-26 2019-09-17 江苏省农业科学院 A kind of sponge gourd Winter-Spring season seedling culture method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104686008A (en) * 2015-03-10 2015-06-10 塔里木大学 Method for breaking chenopodiaceae plant seed dormancy
CN106538104A (en) * 2016-11-03 2017-03-29 张晓峰 A kind of method for improving Flos Chrysanthemi percentage of seedgermination
CN108012801A (en) * 2018-01-24 2018-05-11 合肥申沃园艺有限公司 A kind of chrysanthemum culturing method
CN110235761A (en) * 2019-07-26 2019-09-17 江苏省农业科学院 A kind of sponge gourd Winter-Spring season seedling culture method

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
范双喜等主编: "《园艺植物栽培学实验指导（第2版）》", 30 June 2011 *
贾文海主编: "《西瓜栽培新技术》", 31 July 2010 *

Similar Documents

Publication Publication Date Title
CN102090233A (en) Cultivation technique for radishes
CN101779554B (en) Method for grafting Hami melons in subtropics
CN108243944A (en) A kind of iris rapid breeding method and fine quality tissue culture propagation
CN106359087B (en) A kind of lucid asparagus tissue-culturing rapid propagation method for culturing seedlings
CN103081675A (en) Method of cultivating eustoma grandiflorum flowering plant seedlings
CN107493889A (en) A kind of Winter-Spring Forcing cultivation method for culturing seedlings of greenhouse watermelon
CN105766619B (en) A kind of breeding method of day lily seed
CN103404342A (en) Cucurbita maxima and Cucurbitamoschata grafting and strong seedling cultivation method
CN113994843A (en) Germination accelerating method and rapid breeding method for eggfruit seedlings
CN109089702A (en) A kind of breeding method improving Chinese prickly ash germination percentage
CN103975758B (en) A kind of method utilizing color sweet pepper axillalry bud to cultivate grafting
CN104969776A (en) Intensification root-breaking grafting and seedling cultivating method for thin-skinned melons
CN104221670B (en) A kind of purple yam cultivation implantation methods
CN106342614A (en) Production method of selenium-enriched Mayang longevity fragrant rice
CN104718904A (en) Cultivation method for lodging-resistant white corns
CN110771462B (en) Method for planting paddy and dry land dual-purpose dry rice
CN110876328A (en) Cultivation and planting method for pepper seedling
CN107493862A (en) A kind of Lettuce early spring outdoor implantation methods
CN106550623A (en) A kind of high-quality method for culturing seedlings of astragalus membranaceus seed
CN109429950A (en) A kind of free of contamination organic rice implantation methods
CN111512907A (en) Seedling raising method for seedless watermelons
CN1357218A (en) Method of utilizing new strain of litchi to breed excellent litchi variety
CN108617508B (en) Rooting culture medium and tissue culture method for tissue culture of sea buckthorn
CN106106192A (en) A kind of method for building up of Garbo fruit tissue culturing system
CN106613072A (en) Direct-seeding cultivation method for intercropping and interplanting of organic autumn cabbages

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20200811

WD01 Invention patent application deemed withdrawn after publication