263 results about "Citrus tree" patented technology

The invention relates to a plant wound protective agent containing chitosan oligosaccharide which contains chitosan oligosaccharide and one or more of a nutritional agent, an adjusting agent and a sterilizing agent, wherein the weight percentage of the chitosan oligosaccharide accounting for the protective agent is 0.0015-0.03 percent. The plant wound protective agent can be used for spraying or smearing. The prepared solid preparation for smearing also contains a film-forming agent. On one to five days before pruning, girdling or grafting, the wound is sprayed by using the protective agent; and on one to five days after the pruning, girdling or grafting, the wound is smeared by the protective agent, so that disease attacks of the wound can be reduced and the healing of the wound can be promoted. The plant wound protective agent is used for apple trees, pear trees, peach trees, jujube trees, grape trees, mango trees, longan trees, lychee trees, citrus trees, watermelon, maidenhair trees, honeysuckle, Arabian jasmine flower and Chinese rose.

The invention relates to plant wound liquid containing chitosan oligosaccharide, which is characterized by comprising a plant growth regulator, wherein the regulator is one or more of naphthalene acetic acid and humic acid and accounts for 1 to 50 percent of the total weight of the liquid; and the chitosan oligosaccharide accounts for 0.0015 weight percent to 0.03 weight percent of the total weight of the liquid. The liquid can be prepared into any liquid preparation for spraying. One to five days before plants are trimmed, grafted or girdled, the liquid is used for spraying a wound. The liquid is used for apple trees, pear trees, peach trees, jujube trees, grape vines, mango trees, longan trees, lychee trees, mandarin trees, watermelons, gingko trees, lonicera japonica, jasmine, Chinese rose and the like.

A negative pressure and torsion spring joint-active fruit picker is characterized in that the front bottom of a cylinder is provided with an opening, a spherical arc blade is connected to the front end of the cylinder, the bottom of the cylinder is provided with a square opening, and a fixed guide rail is provided at the square opening and connected with a negative pressure suction pipe. A sucker is driven by negative pressure generated by the negative pressure suction pipe to suck a fruit on a tree; meanwhile, a telescopic motor drives a threaded suction pipe to guide the fruit to the cylinder through a gear pair; when the fruit approaches to the cylinder, a servo motor which tensions a torsion spring is powered off, restoring force of the torsion spring drives the spherical arc blade to rotate, the pedicel of the fruit positioned is cut by great impact generated, air supply to the negative pressure suction pipe is stopped, the cut fruit separates from the sucker and falls into a conveying bag under the gravitational action. The sucker is used to suck the fruit, and the restoring force of the torsion spring drives the spherical arc blade to cut the pedicel of the fruit; the negative pressure and torsion spring joint-active fruit picker is especially suitable for round fruits with highly lignified pedicels, on crowned trees such as citrus trees, apple trees, pear trees and peach trees.

The invention discloses a technology for planting citrus. The technology comprises a step (1) of trimming citrus trees in January, a step (2) of trimming the citrus trees continuously and cleaning a garden in February, a step (3) of applying 500-100 g of urea or 100-200 g of microbial organic fertilizer to each 3-year-old young tree, applying 200-400 g of urea or 500-1000 g of microbial organic fertilizer to soil of each adult fruiting tree and combing 45% of 100-200-fold crystal calcium polysulfide and 0.3-0.5% of urea and 0.3% of monopotassium phosphate for leaf surface spraying to promote spring shoots in March. Reasonable trimming, spraying and fertilization measures are performed for the citrus trees in different months, and the method effectively avoids the damage of diseases and insect pests to the citrus trees and enables the citrus trees to grow healthily and be high in yield and good in fruit quality.

The invention specifically discloses a method for preventing and treating candidatus liberibacter asiaticus by heat treatment. The method comprises the specific steps as follows: a citrus tree body infected with candidatus liberibacter asiaticus is subjected to continuous heat treatment for 2-5 hours in the environment at the temperature of 45 DEG C-52 DEG C; then the tree body is cultivated at the environment temperature; and the operation is repeated in the next week, and continuous treatment is performed for 3-4 weeks. The method is economical and environment-friendly, the content of pathogenic bacteria in the infected tree can be greatly reduced or eliminated, the tree vigor of the experimental tree is recovered, the tree grows normally, and production and yield of citrus are obviously improved.

The invention relates to a citrus planting method comprising the following steps: S1, citrus seedlings are purchased; S2, the citrus seedlings are planted in sandy soil with a pH value of 6-7; S3, the citrus seedlings are fertilized, wherein a fertilization area is areas with each citrus tree as a circle center and with a radius of 70-89cm; S4, an organic fertilizer is dried, such that organic fertilizer powder is obtained; and the organic fertilizer powder is well mixed into a finished fertilizer product; S5, fertilization time and frequency are as follows: spring fertilizer is applied once during March to April, fertilization is carried out twice during a summer shoot period, fertilization is carried out once during an autumn shoot period, and fertilization is stopped after October; S6, fertilization amount is as follows: the fertilization amount each time in the step S5 is 40-65kg/Mu. The method has the following advantages: a citrus marketing peak time is avoided, such that citrus sales price can be ensured, and income increase is promoted; potassium fertilizer, rapeseed meal, farmyard manure and organic fertilizer are mainly adopted in fertilization, such that fruit quality is ensured.

The invention discloses a citrus planting method which comprises the following steps: 1) fixed planting of citrus seedlings is performed; 2) shaping trimming of saplings is performed, tree bodies grow freely within 1-2 years after the fixed planting so that the young trees can flower and fruit in advance, and when the crown grows to about 1 m high, main branches and auxiliary main branches are cultivated by adopting technologies such as branch pulling, branch supporting, branch twisting and pinching; and 3) fertilizer is applied to citrus trees. According to the citrus planting method, through rational fixed planting of the seedlings, the seedling survival rate is high; through rational shaping trimming of the saplings and fertilizer application management of the citrus trees, the citrus trees are good in growth vigor and grow quickly, and the problem of slowness in citrus tree growth in existing citrus tree planting methods is solved.

The invention discloses a method for grafting various trees onto fingered citron stocks, which belongs to a fruit tree grafting method and aims to improve survival rate and fruit quality considerably and improve fruit yield. The method comprises the steps of stock selection and grafting. Ligneous fingered citron tree stocks or branches are selected. The grafting step comprises: cutting the stocks, cutting cions, connecting, selecting a wrapping material, fertilizing, moisturizing, removing the wrapping material, grafting rutaceae citrus trees onto the fingered citron stocks, wherein the stocks and the cions are both wrapped tightly and closely by the wrapping material in the connection process; and when the cions shoot, opening the wrapping material with a knife to prevent the growth of the tissue cions. After orange, shaddock, kumquat, lemon, citron and other rutaceae citrus branches are grafted onto the fingered citron stocks, the grafted trees have the advantages of short crowns, early fruiting, high fruit yield, large fruit, early fruit maturing, high quality and the like. The survival rate of the trees is improved to over 95 percent from the original 30 percent; and 5 to 6-year-old kumquat trees in each mu can yield more than 10,000 kilograms of kumquat.

The invention discloses a liberobacter asiaticum detection method based on visible light images. In the training stage, a large number of images of citrus leaves infected with liberobacter asiaticum and images of normal leaves are collected, the feature values of the texture feature and the color feature are extracted, the above feature values and the feature values of normal leaves are trained and learned through a BP neural network, and the optimal BP neural network model is obtained; in the identification stage, the features of the leaf images to be identified are extracted and input into the optimal BP neural network model, and then whether a citrus tree is healthy is judged. By means of the liberobacter asiaticum detection method based on visible light images, the type of the liberobacter asiaticum and whether the citrus tree is not yellowed due to liberobacter asiaticum are further judged, early, accurate and non-destructive diagnosis can be carried out on the liberobacter asiaticum, and the liberobacter asiaticum detection method based on visible light images has the advantage of being high in detection accuracy.

The invention discloses a citrus planting method and belongs to the technical field of agricultural planting. The planting method comprises the processes of citrus nursery stock selection, land preparation, nursery stock planting, topdressing after planting, processing after citrus harvesting and the like, a home-made soil improvement agent is used in the process to improve soil, and a planting fertilizer is used as a citrus base fertilizer and a leaf fertilizer for topdressing in the citrus growing and fruit bearing process. The citrus planting method is scientific, reasonable, simple, easy to operate and convenient to manage, the fertilizers used in the planting process are rich in nutrition, do not contain any chemical additive, do not contaminate soil and citruses and are safe and reliable, the citrus planting method has remarkable social benefits, economic benefits and ecological benefits, and the citruses are high in survival rate and stable in fruit output and fruit yield in the planting process.

The invention discloses a mite-killing composition containing etoxazole and bifenazate, wherein the weight ratio of the etoxazole to the bifenazate is (30:1)-(1:60), is preferably (10:1)-(1:25) and is more preferably (3:1)-(1:16). The composition can be prepared into a water dispersing particle, a suspension, wettable powder, a dispersible oil suspension, missible oil, an emulsion in water or a microemulsion. The mite-killing composition has reasonable component, good mite-killing effect and low cost of used medicines, achieves the activity and the mite-killing effect not by the simple superposition of all the components, and has obvious synergism. The mite-killing composition takes effect quickly, has long effect-holding period, delays the resistance production, is safe to crops, meets the safety requirement of a pesticide preparation, and has better effect of preventing and treating citrus tree, apple tree and cotton red spiders.

The present invention discloses a pharmaceutical formulation for controlling citrus diseases and pests and a method for increasing yield of citrus. According to the pharmaceutical formulation for controlling citrus diseases and pests, for citrus trees of different stages, by applying a pesticide, the ability of citrus in resisting diseases and pests is improved, the effect of controlling diseases and pests is excellent, and the yield of citrus is increased by at least 8%-12% per mu. Meanwhile, the method for increasing yield of citrus controls periods of drug applying the amount of applied drugs. Compared with the existing method for increasing the yield of citrus, the method provided by the present invention reduces the number of times of drug applying and decreases the amount of applied drugs, thereby achieving precise management. In addition, the drugs in the method for increasing the yield of citrus is environmentally friendly, safe, low in toxicity and harmless, and is beneficial for food safety.

Provided are: a liquid for treatment of Citrus greening disease, which is capable of curing citrus trees with Citrus greening disease; and a treatment method using the liquid. The liquid for treatment of Citrus greening disease contains Fe ions and at least some of the Fe ions are present in the form of Fe²⁺ ions. This treatment liquid contains a predetermined amount of Fe ions and an acid. Citrus greening disease is able to be cured by spraying the treatment liquid onto leaves of citrus trees infected with Citrus greening disease or by pouring the treatment liquid on the roots of citrus trees infected with Citrus greening disease.

A release-controlled fertilizer for the perennial citrus tree contains proportionally the release-controlled urea consisting of coated urea 40 and coated urea 160, the release-controlled potassium sulfate as K fertilizer, magnesium ammonium phosphate fertilizer, B fertilizer and compost. It is only applied once every year.

The invention discloses a method for rapidly calculating citrus yield through pictures. The method comprises the following steps that S1, an intelligent terminal obtains a single citrus picture; S2, recognizing the single-plant citrus picture obtained in the step S1 through a network model, and returning a single-plant recognized fruit grain number n, a k (m) tree age coefficient and a k (w) treeform coefficient; S3, obtaining the citrus number through the following formula: P = n * [e [k (n) + k (m) + k (w)]- 1}]*[ln(x+1)]*y*z; Wherein P is the citrus yield, n is the number of fruit grains identified by a single plant, k (n) is the fruit grain coefficient, k (m) is the tree age coefficient, k (w) is the tree coefficient, x is the average single grain weight, y is the average plant numberper mu, and z is the number per mu. According to the method, pictures of single citrus trees in the fruiting stage are shot through the intelligent terminal, the number of citrus fruits is intelligently recognized, the fruit grains of the single citrus trees can be scientifically estimated according to the fruit grain coefficient, the tree age, the tree shape and the weight characteristics of thesingle citrus fruits, and the citrus yield in the planting area is accurately calculated.

Trehalose or trehalose-6-phosphate, when applied exogenously to citrus trees that are compromised in their growth and development with the condition referred to as citrus greening or HLB, can overcome the deadly effects of the problem. Renewal of tree tissue with trehalose or trehalose-6-phosphate has been documented to begin as soon as 72 hours after exogenous application to the dying tree. The tissue renewal continues with near complete renewal of the leaf canopy, development of fruiting buds, followed by flower development and then development of the flowers into abundant and healthy fruits. Much of what appeared to be dead wood tissue could be covered with healthy new leaves within 2 to 4 months after application. Addition of defined hormones to the soil application of trehalose or trehalose-6-phosphate further enhanced development of new canopy and root tissue.

The invention discloses an automatically-picking method for citrus. The method divides citrus picking into two steps: picking in air and picking on the ground; and the method specially comprises the following steps: a high-precision satellite positioning device is adopted to determine an accurate position of a drone, a binocular visual positioning device carried on the drone is utilized to collectinformation of each citrus tree in a planting area, an image processing method is utilized to obtain spatial three-dimensional coordinates of each citrus tree trunk and mature citrus, information ofall citrus trees and mature citrus in the planting area can be collected a short time and preliminary orientation can be performed; and before picking is performed, the preliminary positioning coordinates are imported and stored in a ground picking system, the ground picking system moves along spacing of rows of the fruit trees and stops in front of each citrus tree, a picking mechanical hand is driven to move to a 0.2 m spatial range of a mature citrus spatial three-dimensional coordinate, a binocular vision positioning device carried by the mechanical hand and same as that of the drone is started, searching is performed within a very small range (+/- 0.25 m) of the stored mature citrus spatial three-dimensional coordinates, so that the mature citrus can be found and confirmed, precise positioning is performed, and automatic picking is performed until picking of all the mature citrus is completed.

The invention provides special fertilizer for citrus planting and a preparation method of the fertilizer and belongs to the technical field of agricultural planting fertilizer. The special fertilizer for citrus planting takes biogas residues, animal waste, urea, bagasse and fulvic acid are base fertilizer and is supplemented with calcium superphosphate, pyrethrum, sodium naphthalene-1-acetate, edible mushroom dregs, polyaspartic acid, bone dust fertilizer, potassium sulfate, manganese sulfate, pumpkin vines, shell powder and banana peels. The preparation method is simple and easy to operate, the prepared fertilizer contains rich nitrogen, phosphorous, potassium and other elements required for plant growth, has multiple nutrients, has pest and disease prevention effects and can improve the soil property and make the soil rich in fertility, so that healthy growth of citrus trees and increase of citrus fruits are facilitated, and the disease resistance of the citrus trees is improved.

The invention discloses a quick identifying method of germplasm materials resistant or tolerant to citrus Huanglongbing and belongs to the technical field of agriculture. The method includes followingsteps: step 1, collecting a to-be-identified germplasma material; step 2, selecting a citrus tree having grafting affinity to the to-be-identified germplasma material in the step 1 and infected withHuanglongbing pathogen as a top grafting tree; step 3, performing top grafting; step 4, performing field management; step 5, observing field symptoms; step 6, performing real-time fluorescent quantitative PCR (polymerase chain reaction) detection; step 7, performing result evaluation. It is the first time to directly top graft the to-be-identified germplasma material onto the tree with Huanglongbing for identifying resistance or tolerance, and there are no other related similar reports at home and abroad.

The invention belongs to the technical field of agricultural machinery and relates to an automatic profile modeling sprayer applicable to citrus orchard terrain. The automatic profiling sprayer consists of a spraying operation part, a lifting guide rail part and a carrier part, wherein the spraying operation part is divided into a left side and a right side, and mechanisms at the two sides are exactly of the same dimension; spraying operation is carried out by upper and lower spray rods, the upper spray rod is used to carry out profile modeling spray on the surface of a citrus tree canopy, andthe lower spray rod is used to carry out profile modeling spray inside the canopy layer; a guide rail device enables the spraying operation devices at the left and right sides to move laterally; a lifting mechanism is mainly driven by hydraulic push rods, and the hydraulic push rods are arranged in a triangular shape, so that the angle of the spraying operation part can be adjusted in real time while the height is adjusted, and furthermore, the spraying operation part can maintain a certain angle relative to the horizontal plane in complex terrain; with a crawler type chassis, the sprayer hasthe characteristics of stable operation, adaptability to wide terrain and the like.