108 results about "Citrus orchard" patented technology

The invention belongs to the technical field of fertilizer preparation, in particular to preparation of citrus proprietary formula fertile being suitable for purple shale soil and applications thereof, which is characterized in that the fertilizer comprises the following effective elements according to pure nutrient in weight percent: 14-18% of nitrogen, 8-10% of phosphorus pentoxide, 8-12% of potassium oxide, 8% of humic acid, 0.05-0.08% of pure boron, and 0.6-1% of zinc oxide; or 12-15% of nitrogen, 6-10% of phosphorus pentoxide, 12-15% of potassium oxide, and 8% of humic acid. The citrus proprietary formula fertile is more suitable for citrus orchards in Three Gorge area, and solves the problems of super high citrus density in the area, single fertilizer types, unreasonable fertilizer proportioning, low fertilizer utilization, and decreased output and quality and the like. By the invention, the yield of the Newhall navel orange is increased by 38.53% and 23.04%, the yield of the Robertson Navel orange is increased by 10.68% and 21.14%, and the yield of the Cara Navel orange is increased by 25% and 15.38% for two consecutive years; and the content of fruit vitamin C is improved by 2-5mg / 100g, and the fruit commodity is good.

The invention relates to a method, device and system for detecting citrus huanglongbing by low-altitude hyperspectral remote sensing. The method comprises the steps that a low-altitude hyperspectral remote sensing image of a citrus distribution area to be detected is obtained, wherein the remote sensing image includes distribution information of citrus plants and geographic information of the citrus plants; the hyperspectral remote sensing image is preprocessed; the preprocessed low-altitude hyperspectral remote sensing image is input into a citrus huanglongbing BP neural network model; and distribution results of the citrus huanglongbing in the distribution area are obtained. According to the detecting method, manpower, material resources and workloads of detection can be reduced for thedetection of the citrus huanglongbing in a large area of citrus orchards; rapid detection, accurate location, high efficiency and undamage can be achieved; the detection process is low in cost, easy and effortless; and the results are accurate and reliable.

The invention provides a method and system for optimizing a harvesting decision of citrus fruits. The method comprises the steps that a fruit ripeness prediction model is established by using historical accumulated temperatures and fruit ripeness dynamic change as indexes, dynamic prediction of fruit ripeness in a citrus orchard based on real-time accumulated temperatures is achieved, and the suitable ripeness standards of fruits for different purposes (processing or fresh eating) are determined; on the basis of establishing the fruit ripeness prediction module of the citrus orchard, a suitable harvesting time prediction model based on the different-purpose fruit harvesting standards with the accumulated temperatures over the year and the real-time accumulated temperature in the current year mutually corrected is established, and the precision and the reliability of the ripeness time prediction are improved. Through a citrus orchard fruit suitable harvesting time prediction technology and a yield non-destructive detection technology, an intelligent citrus fruit optimization harvesting decision system is developed, harvesting of the citrus fruits in the citrus orchard in batches is better achieved, the fruit supply period is prolonged, coordinate supply relation of an enterprise and base users can be achieved, and a support is provided for coordinate connection of the citrus fruits and enterprise processing and fresh fruit marketing progress.

The invention discloses a planting pit soil improving method for fast ripening of soil in a newly built citrus orchard in the three gorges reservoir area. The method comprises the first step of planning a planting pit; the second step of stripping surface soil with the area ranging from 8 m<2> to 10 m<2> and with the center of the planting pit as the original point, wherein the stripping thickness ranges from 18 cm to 22 cm, and the soil is stacked locally after stripping; the third step of digging the planting pit; the step of refilling the planting pit with the surface soil and carrying out improvement of soil fertility, wherein the refilling is carried out in three layers, the bottom layer is refilled with the mixture of coarse stuff and surface soil, the middle layer is refilled with the mixture of the fine stuff and surface soil, the surface layer is refilled with mixture of organic fertilizer and surface soil, the planting pit is filled with the refilling stuff, and the stacked refilling stuff is higher than the original ground by 0.1-0.2 m. According to the planting pit soil improving method, the soil improvement work amount accounts for 20-30 percent of the common soil improvement work amount, the soil improvement work amount and establishing cost are greatly reduced, and the planting pit soil improving method has good ecological benefits. The ripening time of soil in the citrus orchard is shortened, and the ripening time based on the method is only one month while the ripening time based on a traditional method is about half year.

The invention provides a method and a reagent set for preventing citrusyellowshoot, and belongs to the field of agricultural plant cultivation. The technical scheme is that the method for preventing citrusyellowshoot comprises the following steps: A, applying quick lime to soil of a citrus orchard according to usage amount of 50-150 kg / mu; B, applying organic fertilizer containing microorganism bacteria to the soil of the citrus orchard according to usage amount of 100-250 kg / mu; C, every 30-40 days, spraying a plant immunity inducer on citrus plants or irrigating the plant immunity inducer on roots, usage dosage being 100-150 g / mu, and continuously using 3-5 times. The quick lime is used to adjust soil acidity, and an organic biological bacterial fertilizer is used in a cooperated manner, to improve soil structure and quality. The biological bacteria is cooperated with the plant immunity inducer to promote root activity of the citrus plants, improve citrus disease resistance, so as to efficiently prevent citrusyellowshoot in a green manner, and promote healthy growth of the citrus plants.

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.

Provided is a comprehensive citrus fruit fly control method based on a PUSH-PULL strategy. The method comprises the control measures of two links of the adult stage and the larval stage; in the adult state, adults are rejected from entering a citrus orchard to lay eggs by adopts the Push-Pull strategy, and the adults are killed outside the citrus orchard; in the larval stage, wormed fruits (maggot fruits) are removed, picked up and treated for killing insects. The method particularly comprises the steps that in the adult emergence and egg laying period, repellent is sprayed in the citrus orchard, an odor barrier is set up for avoiding the adults, the adults are blocked from entering the citrus orchard to lay eggs, and the adults are induced by food attractant to gather around the citrus orchard to be killed; for the larval stage, in the stage that the wormed fruits are yellowed before the fruits are ripe, the wormed fruits yellowed in advance in trees are removed, dropped fruits on the ground are picked up ad collected, centralized treatment is effectively conducted, and larva are killed. The method is green and environmentally friendly, the raw materials are easy to obtain, the cost is low, the control effect is stable, the killing efficiency is high, the wormed fruit treatment method is easy and convenient to implement and is not limited by environmental conditions, and damage of fruit flies to citruses is effectively controlled.

The invention provides a fertilization method for improving citrus orchard soil and improving citrus quality. The fertilization method comprises the following steps: S1, applying a base fertilizer in a harvesting period of citruses; S2, applying a fertilizer before a flowering period of the citruses; S3, applying a fertilizer in a fruit setting period; S4, applying a fertilizer in a fruit growing period and an autumn twig growth period, and watering once to twice after each time of fertilization in the step S1 to S4. The fermentation method has the beneficial effects that due to the addition of an organic carbon fertilizer and a commercial organic fertilizer with high content of organic matters and high content of viable counts, the content of the organic matters in the soil can be increased, the number and types of beneficial microorganisms in the soil can be increased, root system growth can be promoted, the fertilizer utilization rate can be increased, tree vigor can be improved, and the yellowing ratio of the citruses can be reduced; while the organic matters of the soil are increased, the pH value of the soil can be also adjusted, so that the pH value of the soil can be applicable to growth of citrus root systems, yellowing can be reduced, and the quality of the citruses can be improved; as fertilizers are applied in time according to growth rules of the citruses, and the fertilizers are of a reasonable ratio, yellowing caused by nutritional deficiency of the citruses can be avoided, and the quality of the citruses can be improved.

The invention discloses a method for luring, catching and killing citrus black cicadas. A feasible method for luring, catching and killing nymphs does not exist at present. The method comprises the steps of laying straws and applying barnyard manure in furrows around citrus trees or pomelo trees according to life habits of black cicada larvas and nymphs, creating appropriate soil conditions and living environments and then luring, catching and killing the nymphs. The luring rate is improved by more than double through comparison. Simultaneously, the catching and killing time and measures of lured nymphs are limited and stipulated strictly. The yield of citrus orchards (or pomelo orchards) and nearby citrus orchards is improved by 19%-28.5% through comparison after the nymphs are lured, caught and killed. Furthermore, the income gained by selling the nymphs can be increased, and the economic benefit is obvious.

The invention discloses an irrigation system and method based on citrus canopy spectral response. The method comprises the steps of firstly obtaining a citrus orchard canopy spectral image and citrus growth environment information, transmitting to a cloud server through a GPRS technology, processing the spectral data through the cloud server, and inputting the processed spectral data into a pre-trained water stress index prediction model; obtaining a water stress condition diagram of the whole citrus orchard. An upper computer obtains the water stress condition of the whole orchard, extracts areas needing irrigation, calculates the irrigation amount of each area through a fuzzy controller, sends the irrigation amount to each irrigation control node through a wireless sensor network to irrigate the whole orchard, and achieves the monitoring and irrigation of the water of the citrus orchard. Water resources are fully utilized.

The invention relates to the technical field of agriculture, and discloses a soil improvement and fertilization method for a newly-built citrus orchard. For contiguous land such as barren hills and slopes, gentle slope ground and hilly downland in hilly areas of the south, a ditching, ridging, soil improvement and fertilization method is adopted, and the problems of poor water and soil erosion prevention effect and water and fertilizer retention performance in the prior art are solved. The soil improvement and fertilization method for the newly-built citrus orchard has the advantages that thewater and soil erosion prevention effect and the water and fertilizer retention performance are good, the improvement cost is relatively low, and the improvement period is relatively short.

The invention belongs to the technical field of integrated control of disease, insect and weed damages of plants and particularly relates to a method for realizing pesticide application reduction andsynergism of a citrus orchard. According to the method for realizing pesticide application reduction and synergism of the citrus orchard, silver black reflective films are used for covering citrus, and the stability of the planting conditions of the citrus can be better guaranteed; meanwhile, the number of pest population such as winged aphids, thrips and citrus psylla can be effectively reduced,and the use frequency of chemical insecticides can be thus reduced; in addition, germination and growth of weeds can be effectively inhibited, the annual use frequency of herbicides can be reduced by2-3 times and even the use of the herbicides can be completely eradicated in the whole citrus planting process, so that manual operation of intertillage, weeding, irrigation and the like can be greatly reduced, and the production cost can be reduced greatly.

The invention discloses a pest control system for citrus orchards, and belongs to the technical field of intelligent agriculture. The system includes a data acquisition unit, a cloud server, and a mobile terminal, wherein the data acquisition unit is used for collecting environmental parameter information in a citrus orchard and appearance information of fruit trees and uploading the information to the cloud server, the loud server is used for data exchange, storage and processing, by analyzing the fruit tree information uploaded by the data acquisition unit, whether the fruit trees suffer from diseases or not and the disease type are judged, and an analysis result is sent to a mobile terminal, and the mobile terminal is used for data exchange with the cloud server. The invention aims to provide the pest control system for citrus orchards to solve the problem that the efficiency of manual pest control in the citrus orchards is low.

The invention discloses a fertilization method for citrus. The method comprises the following steps: 1) performing deep ploughing and performing fertilization: after citrus fruit is picked, digging ditches with width and depth of 0.8m x 1.0m in the middle of each two adjacent field planting rows in a citrus orchard, packing mellow soil ditched out at a position with a distance 20-30cm far away from the ground surface into the ditches as bottom layers, when the depth of the packed soil is 20-30cm, spreading hay, wherein the usage amount of the hay in each mu of the orchard is 400-600kg, when the hay is spread to a position with a distance 15-30cm far away from the ground surface, applying an organic fertilizer, wherein the usage amount of the organic fertilizer in each mu of the orchard is200-300kg, continuing to apply a phosphate fertilizer, wherein the usage amount of the phosphate fertilizer in each mu of the orchard is 40-60kg, and finally covering the ditches with excavated raw soil; 2) performing fertilization in the budding stage; 3) performing fertilization in the young-fruit developing period; 4) performing fertilization in the young-fruit expanding period; 5) performing fertilization after fruiting occurs and before fruits are ripe; and 6) performing fertilization after harvesting is performed. According to the method provided by the invention, through deep ploughingand fertilization in a planting land, and planting land treatment of arranging a mellow soil layer, a hay layer, an organic fertilizer layer, a phosphate fertilizer layer and a raw soil layer in sequence from the bottom to the top in the middle soil of each two adjacent field planting rows of the citrus orchard, the fertilizer efficiency and soil environment of the citrus planting land are effectively improved, and the optimum cultivation environment for the citrus is guaranteed.

The invention discloses a special fertilizer for a citrus orchard garden, and method for applying the fertilizer once or twice every year. In the special fertilizer, the total weight of nitrogen, phosphorus and potassium in an organic fertilizer takes up about 60%. The organic fertilizer can ensure that soil forms a good granular structure, improve the water retention and fertilizer retention capability of soil so as to prolong the fertilizer effect, the organic fertilizer can also provide trace elements essential to the growth and development of various citruses, and the yield and quality of citruses can be improved; the times of fertilizer application can be reduced, the labor intensity and labor cost of farmers can be lowered, the fertilizer is applied from last ten day of June to the first ten day of July every year according to the method for applying fertilizer once, and the fertilizer application is conducted once yearly about one week before the end of second physiological fruit dropping period of citruses. According to the method for applying fertilizer twice, the urea in the special fertilizer is applied from the last ten day of January to the middle ten day of the February to complete the first-time fertilizer application; the fertilizer is applied from last ten day of June to the first ten day of July, and the application of fertilizer in the special fertilizer is conducted about one week before the end of second physiological fruit dropping period of citruses to complete the second-time fertilizer application.

The invention discloses a planting method for green fertilizer plants in a citrus orchard in slope cropland in a three gorges reservoir region. The method comprises the steps of pretreatment of weedslocated among rows in the citrus orchard before the green fertilizer plants are sown, sowing of the green fertilizer plants and utilization of the green fertilizer plants, wherein the green manure plants are Vicia villosa Rothvar. and Vicia villosa Roth.. According to the method disclosed by the invention, the green fertilizer plants are planted in the whole orchard in the young and full fruit-bearing periods, so that construction of the ecological orchard and production of green fruits can be ensured, and income of fruit farmers can be increased; the method can reduce water and soil loss andfertilizer loss, reduce non-point source pollution, and improve a utilization rate of a fertilizer; and the method can inhibit growth of the weeds in the orchard and reduce use of herbicides.

The invention belongs to the technical field of fruit tree cultivation management and particularly provides a method for improving citrus orchard ecological environment by interplanting Tephrosia candida and Dolichos lablab L.. The method comprises the steps of green manure seeding, cultivation management, and cutting and utilization. According to the invention, by interplanting the perennial erect green manure crop Tephrosia candida and the entwined green manure cropDolichos lablab L. between rows of a citrus orchard, the Dolichos lablab L. is guided to climb on the Tephrosia candida, the Dolichos lablab L. is prevented from climbing on and winding around fruit trees, the amount of green manure and grass is increased, at the same time, by regular cutting, the grass covers the surface of soil, the surface temperature is further reduced, the organic matter content of the soil of the citrus orchard is improved, water and soil are preserved, weeds are inhibited, therefore, the fertilizerapplication is reduced, the ecological environment of the citrus orchard is improved, the fruit quality is improved, and the market competitiveness is improved.

The invention discloses a method for transforming a short-old tree low yield citrus orchard. The method comprises the following steps that (1) deep tillage, soil amelioration and root system renewal are conducted, wherein pit expansion is conducted year by year along the peripheries of field planting pits, part of thick roots and thin roots are cut off, and roots are led to grow deeply and expand; (2) base fertilizer is applied repeatedly, wherein organic fertilizer is applied repeatedly while deep tillage, soil amelioration and root system renewal are conducted, organic fertilizer of about 1500 kg is applied each mu, and part of quick-acting fertilizer is matched; (3) proper repeated pruning is conducted to achieve crown renewal, wherein large branches are cut back and pruned repeatedly so that strong branches can grow out of the branches, a solid framework is formed, pre-emergence fertilizer and shoot promotion fertilizer need to be well applied in the shoot emergence state, the shoot promotion fertilizer is mainly composed of quick-acting fertilizer such as night soil, and solid autumn shoots need to be especially cultured; (4) diseases and insect pests need to be well controlled, wherein the orchard needs to be cleaned in winter, lime sulphur is sprayed, and the diseases and the insect pests need to be well controlled in the growth season. The method has the advantages that tree vigor and the bearing capacity can be recovered after transformation is conducted through the measures for one to two year.

The invention provides a weed control composition containing ametryn, sulfentrazone and flazasulfuron and an application thereof, which relate to the weed control composition. The weed control composition comprises the ametryn, the sulfentrazone and the flazasulfuron which serve as active materials. The invention also relates to a method for disposing unwanted plants by using the weed control composition. The weed control composition contains the active materials which are the ametryn, sulfentrazone and flazasulfuron. According to the weed control composition, the weight ratio of the ametryn to the sulfentrazone is (30:1)-(1:30), the weight ratio of the ametryn or sulfentrazone to the flazasulfuron is (90:1)-(1:10), and the total weight of the ametryn, sulfentrazone and flazasulfuron accounts for 5-95% of the weight of the weed control composition. The weed control composition is mainly used for preventing and killing off weeds, especially cyperus rotundus in sugar crane farms, corn fields, citrus orchards and other places.

The invention discloses a growth regulation and control type conditioner special for acidic soil of a citrus orchard, a preparation method and application. The soil conditioner is composed of a quick-acting acid modifying substance, a slow-acting acid modifying substance, a root-promoting substance, secondary element magnesium, trace element boron and trace element zinc, wherein the mass ratio ofthe quick-acting acid modifying substance, the slow-acting acid modifying substance, the root promoting substance, the secondary element magnesium, the trace element boron and the trace element zinc is 1:(0.4-0.8):(0.05-0.1):(0.1-0.2):(0.02-0.04):(0.005-0.01). The soil conditioner provided by the invention has the outstanding advantages of improving the pH value of soil, correcting citrus nutrientdeficiency yellowing, preventing nutrient soil fixation, promoting citrus root growth, improving citrus fruit quality and the like.

The invention discloses a mountain citrus orchard irrigation system and method. The system comprises a microprocessor module, a sensor module, a bi-stable pulse electromagnetic valve, a GPS satellitetime-base module, a ZigBee local area network, a gateway module, a GPRS module and a cloud server, wherein the sensor module, the bi-stable pulse electromagnetic valve and the GPS satellite time-basemodule are all electrically connected with the microprocessor module, the microprocessor is electrically connected with the ZigBee local area network, the ZigBee local area network is connected with the GPRS module through the gateway module, and the GPRS module is wirelessly connected with the cloud server through the GPRS; the sensor module is used for collecting environment parameters of a mountain citrus orchard; the GPS satellite time-base module is used for performing satellite time service on the irrigation system; the bi-stable pulse electromagnetic valve is used for controlling an irrigation switch; the microprocessor module is used for receiving the environment parameters of the sensor module. Precision irrigation and scientific management of the mountain citrus orchard can be achieved when a user obtains the growth environment condition of the mountain citrus orchard in real time.

The invention belongs to the field of citrus planting, and particularly relates to a citrus orchard conducive pest control planting method. Guava fruiters are planted in a citrus orchard to increase the population quantity of phytoseiid mites in the citrus orchard, an independent environment is formed, citruses are planted, the periphery of each citrus tree is enclosed by the guava fruiters to form double barriers in a checkered manner, petroleum oils are sprayed in a matched manner, and pest control is fundamentally performed in the citrus planting process. According to the citrus orchard conducive pest control planting method, based on the capability of naturally breeding the phytoseiid mites by the planted guava fruiters, the guava fruiters and the citrus trees are planted in the checkered manner, the citruses are planted after the guava fruiters form crowns, and the petroleum oils are sprayed to control citrus tristeza viruses. The pest control function of natural enemies is a direct effective means for killing sole insect-borne citrus psyllas of citrus tristeza virus transmission pathogens in citrus planting.

The invention relates to a method for preventing and controlling citrus red mites. The citrus red mites have strong sitotaxis to oxalis corniculata, and the oxalis corniculata is interplanted in a citrus orchard, so that there is abundant oxalis corniculata in the citrus orchard to attract the citrus red mites to feed off the oxalis corniculata in spring, summer or autumn with high incidence of the citrus red mites, thereby preventing the citrus red mites from feeding off citrus fruits and leaves; when the average number of the citrus red mites on each leaf of the oxalis corniculata is 3 to 5,prevention and control of the citrus red mites can be achieved without spraying pesticides to citrus trees, as long as the oxalis corniculata is sprayed with pesticides to kill the citrus red mites.The oxalis corniculata is interplanted in the citrus orchard, so that soil organic matter is increased to achieve cost savings and optimize an orchard ecological environment, and a technical support for production of green and safe citrus is provided. The method has the advantages of simple operation, easy learning and popularization, stable effects, no toxicity, no side effects, less investment,high benefits and wide application prospects, and is an effective new technology for farmers to get rich.

The invention provides a biological organic fertilizer applied to a Gannan red and yellow soil region. The biological organic fertilizer comprises the following components in percentage by weight: 30-50 percent of cow dung, 5.0-25 percent of microbial strain agent, 9.0-25 percent of straw stalk, 0.1-6.0 percent of zinc oxide or zinc salt and 6.0-25 percent of magnesium oxide or magnesium salt. The biological organic fertilizer is developed aiming at oranges planted in the Gannan red and yellow soil region, the soil is rapidly improved by utilizing the advantages of the biological organic fertilizer, the soil organic matters are supplemented, and elements of magnesium and zinc required for crops in the Gannan region are added. The fertilizer efficiency is balanced, the crop nutrition can be timely supplemented, the crop growth in the Gannan region is better promoted, and an effect of scientific fertilization is achieved, particularly in the orange planting process, after the biological organic fertilizer is used for one year, the common magnesium and zinc deficiency in the citrus orchard of the Gannan red and yellow soil region is basically eliminated, the growth of young orange trees is effectively promoted, and the yield of the orange trees is improved.

The invention relates to a soil amelioration method in a citrus orchard. The method comprises the following steps: performing fertilization in autumn: applying a microbial fertilizer and oyster shellpowder to soil after fruits are picked; performing fertilization in spring: applying a microbial fertilizer and a microbial liquid to the soil during root growth in early spring; and performing fertilization in summer: applying a microbial liquid to the soil before root growth in summer. The method disclosed by the invention is aimed at soil deterioration under citrus site conditions, improves soil physical properties by additionally applying a large amount of organic matter and supplementing beneficial active bacteria with abundant varieties, and cultivates a good soil environment around a citrus rhizosphere; the beneficial active bacteria can antagonize harmful fungi, improve utilization of nutrient elements in the soil, promote the extension and outward extension of citrus roots, facilitate absorption and utilization of nutrient substances by the citrus roots, thereby enhancing tree vigor, reducing an occurrence of diseases and obviously improving yellowing of citrus leaves; and themethod disclosed by the invention can reduce application frequency of chemical pesticides and reduce use of chemical fertilizers by 20% every year.

The invention provides a method for preventing and curing diaphorina citri by virtue of an airplane. The method comprises the step of uniformly spraying medicaments by virtue of the airplane to spring shoots, summer shoots, autumn shoots or winter shoots in each year, wherein the medicaments include a medicament A, a medicament B and 0.1%-0.5% of a 'Feibao' flight-prevention aid. By virtue of the method, the prevention effect of the diaphorina citri is guaranteed, meanwhile, the safety of the ecological environment of a citrus orchard is guaranteed, the preventing and curing costs are lowered, the use amount of pesticides is reduced, the drug resistance of the diaphorina citri is effectively delayed, and the sustainable development of the ecological system of the citrus orchard is guaranteed.

The invention relates to a citrus planting method. The citrus planting method comprises the steps of citrus planting, orchard management and citrus harvesting, wherein a planting pit is filled with amixture of chicken manure, rice straw ash and soil around healthy adult citrus trees, a mixture of soil around the healthy adult citrus trees, soil from legume crop land and nitragin made from the roots of legume crops, and a mixture of common farmyard manure and dug-up soil from bottom to top in sequence, four steep pits which are uniformly distributed along the planting pit are obliquely upwardsformed in the bottom of the planting pit, the steep pits are filled with a mixture of sere citrus tree leaves and dug-up soil, sere straw is inserted into the steep pits respectively, and in a rainyseason, air caps are arranged in the orchard. By means of the citrus planting method, the soil environment can be improved for a long time, the gas permeability of the soil can be increased, the development and growth of the root system are promoted, the ventilatory efficiency of the citrus orchard is improved, and the surviving rate of citrus seedlings and the fruiting rate are improved.

The present invention provides a method for adjusting performance of soil in a citrus orchard, and belongs to the field of citrus plantation. The method comprises the steps of spreading a nutrition material of 500-700 kg per mu to the soil and plowing and stirring the soil uniformly, and after 5-7 days, adding a soil conditioner of 20-30 kg per mu to the soil and plowing and stirring the soil uniformly; wherein the nutrition material is composed of raw materials including, by weight, 30-40 parts of brown coal powder, 80-90 parts of modified bentonite, 20-25 parts of EDTA-Fe, 12-15 parts of EDTA-Mg, and 400-500 parts of traditional Chinese medicine slag. According to the method, the harden soil can be improved, the soil pH value is can be adjusted, heavy metal pollution in the soil can be reduced, and therefore the soil fertilizer can be increased. The method is suitable for large-scale systematic application to increase production and income for farmers.

The invention provides a weeding combination containing ametryn and sulfentrazone and applications of the weeding combination. The weeding combination comprises the ametryn and sulfentrazone which are taken as active substances. The invention also relates to a method for processing unexpected vegetations by using the weeding combination. The weeding combination containing the ametryn and the sulfentrazone is characterized by comprising the active components, namely the ametryn and the sulfentrazone, wherein the weight ratio of the ametryn to the sulfentrazone is 50: 1 to 1: 50. The ametryn and the sulfentrazone are 5 to 90% of the wedding combination by weight percent. The weeding combination is applied to places with vegetation or places expected to be free from vegetation. The weeding combination is mainly used for removing weeds in a sugarcane field, a corn field citrus orchard and the like, and particularly removing cyperus rotundus weeds.

The invention relates to a special weeding composition for citrus orchards and non-cultivated lands, the weeding composition at least comprises glufosinate-ammonium, fluoroglycofen-ethyl and flumioxazin, and the mass ratio of the active components is (1-50): (1-50): (1-50), preferably (1-10): (1-10): (1-10). The weeding composition can be prepared into preparation formulations including an aqueoussolution, a suspending agent, a suspoemulsion, a dispersible oil suspending agent, wettable powder, water dispersible granules, granules and a microcapsule suspension-suspending agent according to amethod known by technicians in the technical field. The weight percentage of the active ingredients in the preparation is 1%-80%, preferably 5%-75%. The invention also relates to an application of thecomposition in preventing and removing weeds in citrus orchards and non-cultivated areas.