618 results about "Chemical control" patented technology

The invention relates to a planting method of Chinese trichosanthes, belonging to the technical field of plantation and comprising the steps of: variety breeding, seedling reproduction, transplanting, field management, disease and pest control, harvesting and processing, wherein the variety breeding step includes the sub-steps of the tests in different production places, amplification and verification tests, resistance test, field pest investigation and trichosanthes nematode control; the seedling reproduction step includes the sub-steps of seed reproduction and root reproduction; the transplanting step includes the sub-steps of land selection and preparation, ridging, reproduction and planting, planting method implementation and field management; the land selection and preparation step includes the sub-steps of detection on chemical characteristic of soil, basic fertilizer application and disinfection; the reproduction and planting step includes the sub-steps of seed bud selection, rood cutting and breeding, planting and shed putting up; the planting method implementation step includes the sub-steps of planning density control and staminiferous plant matching; the filed management step includes the sub-steps of intertillagement and weeding, top application, shed putting up, pruning and cold prevention, in particular to intertillagement and weeding, root airing, intercrop, earthing, vine supporting and racking, top application, pruning, flower and fruit protection, chemical control and foliage application; and the disease and pest control step includes the sub-steps of control of diseases and pest and control method implementation.

An automated system of integrated computer programs and files facilitates compliance with Chemical Control Laws of different jurisdictions. In one embodiment, the system uses a raw material database file, a formula database file, a manufacturing status database file, a sales status database file, a regulatory worksheet program, and an update program, all residing on a computer system. These files and programs are collectively used to: maintain Chemical Control Law inventories; maintain records of chemical and product Chemical Control Law registrations; provide a basis for automated control of chemical or product manufacturing, distribution, importing and exporting through the generation of country or regional manufacturing and sales status; generate certification letters; generate Chemical Control Law manufacturing and sales statuses for particular countries or regions of the world; and provide real-time updating of a chemical's or product's manufacturing and sales status.

The invention discloses an organic tobacco field planting and field managing method, which comprises the following steps: preparing land and ridging, transplanting tobacco seedlings, applying fertilizer in fields, performing field management and pest control, and harvesting manually, wherein the section of a ridge is ladder-shaped, the ridge spacing is 100-120cm, the ridge height is 20-25cm, drainage ditches are formed according to the height of terrain, the tobacco seedlings are transplanted with the plant spacing of 45-55cm, watered with enough water, covered with soil, and covered with a mulching film, and the mulching film is broken to expose the seedlings, base fertilizer is applied before ridging and during the transplanting and topdressing is applied after the transplanting, the field management comprises seedling deficiency check and seedling supplementation, film removal, earthing up, water replenishing, topping, leaf retention and sprout removal, and the pest control comprises comprehensive control and chemical control. According to the organic tobacco plantation and management requirements, organic fertilizer is adopted, and a harmless medicament or biological agent is used for the pest control, so that the organic production of the tobacco is realized. Compared with the regular tobacco production method, lead, mercury, cadmium, arsenic, copper, chromium and other harmful elements as well as the residual quantities of imidacloprid, emamectin benzoate, permethrin, fenvalerate, thiamethoxam and other main pesticides can be obviously reduced.

The invention relates to a cotton cultivation method, which plants cotton in soil or light soil, and comprises: (1) preparation before sowing, which comprises land preparation and full-layer fertilizer application, wherein land preparation is to make the land flat, fine and free from weeds by rebuilding head and sides of a land which unfreezes in early spring, performing chemical weeding on the land by using a herbicide, and harrowing in time, and the full-layer fertilizer application is to apply urea and diammonium phosphate before turning up the soil; (2) sowing, namely sowing when the temperature of the soil 5 centimeters under a film is constantly above 12 DEG C and planting a maize trapping and killing zones after the cotton seed are sown, wherein mechanical hole sowing is adopted, 3 to 4 seeds are sown in on hole, and the sowing depth is 1.5 to 2 centimeters; and (3) field management which comprises breaking hardened soil, intertillage, final singling, chemical control, dripping water, topdressing, removing tip, and preventing and controlling pests. When the method of the invention is used, the lint cotton yield per mu is over 200 kilograms.

The chemistry regulation and control cultivate means of the hot pepper's high output and good quality is one of the cultivate means of the vegetable crop. Basing on the insufficiency of recent hot pepper cultivate means, dispose hot pepper at its critical growing period by using plant growth regulator such as fruitone, drop-defending element and casing coupling amine, as well as cultivate synthetically by using cultivate measures such as scientific, rational manure and proper planting density, including nursery sock growing, planting, chemical controlled treatment, fertilizer water quality management, branching and wiping bud processes. It makes the output of the hot pepper increase quickly, with the average increase production of 18percent to 30percent, the quality improves evidently, besides, the content of vitamin C and deoxidizing sugar are improved apparently, it is also suitable for different kinds of hot pepper.

Provided are methods for preparing and delivering stable, purely synthetic, self-assembling, controlled release, polyethylene oxide (PEO)-based polymersome vesicles, and the resulting PEO-based polymersomes capable of such controlled release, and methods of use therefor for the controlled transport and delivery of encapsulatable, cytotoxic, anticancer active agents contained therein. Further provided are methods for controlling destabilization of the vesicle membrane and the resulting hydrolysis-triggered, controlled release of active agent(s) encapsulated in the vesicle by controlling the blend ratio (mol %) of hydrolysable PEO-block copolymer of the hydrophilic component(s) and of the more hydrophobic PEO-block copolymer component(s) to produce amphiphilic high molecular weight PEO-based polymersomes, wherein the PEO volume fraction (f_EO) and chain chemistry control encapsulant release kinetics from the copolymer vesicles and the polymersome carrier membrane destabilization.

A system is provided for the manufacture of carbon based electrical components including, an ultraviolet light source; a substrate receiving unit whereby a substrate bearing a first layer of carbon based semiconductor is received and disposed beneath the ultraviolet light source; a mask disposed between the ultraviolet light source and the carbon based semiconductor layer; a doping agent precursor source; and environmental chemical controls, configured such that light from the ultraviolet light source irradiates a doping agent precursor and the first carbon layer.

The invention relates to a control method of spartina alterniflora, belonging to the technical field of ecological engineering. Spartina alterniflora is artificially introduced in China in the 1980s, and plays a positive role for damping waves, protecting slopes, promoting deposition and reclaiming lands on Chinese coastline, however, as an alien invasive species recognized internationally, the population characters of powerful breeding and rapid extending ability of the spartina alterniflora bring a series of negative effects to the natural wetlands ecosystem of Chinese coastal tidal land and the regional biodiversity; and control of the spartina alterniflora is already a universal problem. The prior single physical, biological or chemical control method has the disadvantages of low efficiency, high environmental pollution risk, low ecological safety, high cost and unobvious control effect. The invention overcomes the disadvantages of the prior preventing and controlling techniques, and utilizes the comprehensive control method of cradling and water level regulating, eradicates the invasive species and controls the growth and rapid extension of the invasive species through restraining the growth of spartina alterniflora, plays an active restoring role to the ecological system destroyed in large areas, and provides an efficient path for preventing spartina alterniflora from spreading extensively in coastal areas.

Three methods for the preparation of polyhedral oligomeric silsesquioxanes (POSS) using the action of bases capable of attacking silicon atoms or any other compounds capable of reacting with protic solvents (such as ROH, H2O, etc.) and producing hydroxides[ OH]-, alkoxide [RO]- and other compounds. The first method utilizes these bases to effectively redistribute the silicon-oxygen framework in polymerized silsesquioxane [RSiO1.5]∞ into POSS nanostructures, that is, the formula [(RSiO1.5)n]∑ The homoleptic segment shown in #, the functionalized homoleptic segment shown in [(RXSiO1.5)n]∑#, the heterogeneous segment shown in [(RSiO1.5)m(R'SiO1.5)n]∑# Segment (heteroleptic) and {(RSiO1.5)m(RXSiO1.0)n}∑ #shown as a functionalized heterosegment nanostructure, where ∞=1-1,000,000 or higher. The second method uses a base to help form POSS nanostructures from silane RSiX3 and linear or cyclic silsesquioxanes of the formula RX2Si-(OSiRX)m-OSiRX2, that is, the formula [(RSiO1.5)n ]∑#, the homogeneous segment shown in [(RSiO1.5)m(R'SiO1.5)n]∑# and the miscellaneous segment shown in [(RSiO1.5)m(RXSiO1.0)n]∑# Functionalized heterosegment nanostructures, where m=0-10, X=OH, Cl, Br, I, alkoxide OR, acetate OOCR, peroxide OOR, amine NR2, isocyanate NCO and R. The third method utilizes bases to selectively open silicon-oxygen-silicon (Si-O-Si) bonds in the POSS structure to form POSS species with incompletely condensed nanostructures. These methods also provide control over the stereochemistry of X. The three methods can generate new POSS species, which can be finally transformed into POSS species suitable for polymerization, grafting or other desired chemical reactions after additional chemical control.

The invention relates to beet stress-resistant yield and sugar increasing series composite growth regulator and a systematic chemical regulation method. The series composite growth regulator comprises chemical control I composite growth regulator, chemical control II composite growth regulator, chemical control III composite growth regulator and chemical IV composite growth regulator; the beet stress-resistant yield and sugar increasing systematic chemical control method sprays the four regulators on the surface of leaves respectively according to the four growth stages of the beet: seedling stage, leafage forming stage, root and sugar increasing stage and sugar accumulation stage, induces the expression of the beet stress-resistant genes, sufficiently explores the potential capability of resisting saline and alkali, drought and diseases of the beet in the full growth stage, and increases the yield and sugar content. In the saline-alkali soil with average salt content of 0.51% and Ph value of 8.4 in west Jilin where the annual precipitation is less than 300 mm, the average beet yield is 53.33 tons per hectare, an increase of 27.26%, and the sugar content is 17.6%, an increase of 2.1%.

The invention provides a cultivation method for improving the yield of sweet potatoes in hilly and mountainous areas of a northern potato planting region. The cultivation method comprises the steps of selecting a variety, cultivating strong seedlings, conducting ridging and applying fertilizer in an integrated mode, planting the seedlings early in an appropriate period, covering the seedlings with a plastic film, conducting chemical control, preventing and controlling diseases and pests and harvesting the sweet potatoes through machines. According to the step of cultivating the strong seedlings, seeds are dipped in gibberellin to promote sprouting, and strong seedlings and high sheared seedlings are selected carefully. According to the step of planting the seedlings early in an appropriate period, the seedlings are dipped in a modifier, three leaves remains on each seedling, the seedlings are planted in a drought-resisting mode, the seedlings in pits are watered with enough water, and reasonable close planting is adopted. According to the step of preventing and controlling diseases and pests, the diseases are prevented and controlled, and the pests are prevented and controlled. The advanced planting technologies including planting the seedlings early and densely, taking drought resisting measures in a seedling period and the like are adopted, so that the yield of the sweet potatoes is remarkably improved; the comprehensive degree of the technologies is improved, the cultivation technological level of the sweet potatoes in the hilly and mountainous areas is comprehensively improved, work efficiency is improved, and production cost is reduced; meanwhile, the standardization degree is high, and a foundation is laid for standardized setting and popularization of the cultivation technology of the sweet potatoes in the hilly and mountainous areas of the northern potato planting region.

The present invention relates to a method for cultivating cotton in medium saline and alkaline land, belonging to the field of plant cultivation technology, mainly for solving the problem of planting cotton in saline and alkaline land. Said method is characterized by that it includes the following steps: adopting short-seasonal cotton species whose growth stage is about 115 days, in the midde ten days of fifth month, after the surface temperature is risen again, sowing; adopting sowing in deep furrow, mulching, after emergence of seedlings postponing the time of transplanting seedlings; planting desity is about 6000 plants/mu, non-training, only pruning tip, adopting mepiquat chloride (DPC) to make chemical control of its whole growth process, finally controlling plant height and making it be about 80cm.

The chemistry regulation and control cultivate means of the cowpea's high output and good quality is one of the cultivate means of the vegetable crop. Basing on the insufficiency of recent cowpea cultivate means, we dispose the cowpea at seedling stage and florescence by using plant growth regulator such as high yield element, drop-defending element and 1-naphthalene acetic acid, as well as cultivate synthetically by using cultivate measures such as scientific, rational manure and proper planting density, including nursery sock growing, planting, chemical controlled treatment, fertilizer water quality management, branching and wiping bud processes. It makes the output of the cowpea increase quickly, with the average increase production of 19percent to 31percent, the quality improves evidently, the content of ant scorbutic vitamin and reduction sugar increase, and the coarse fiber's content decreases. The invention is fit to different kinds of cowpea.

The invention discloses a high-yield cultivation method for peanuts, comprising the steps of fertilizer applying, seed drying, seed sowing, leaf fertilizer spraying and chemical control. In the invention, the steps are adopted to cultivate the peanuts so as to make soil nutrients comprehensive and rich and sowing density increased, fully meet the demands of the peanuts on nutrients due to additional fertilizer supplement by human labor and timely chemical control, and generate fertilizer response to the greatest extent, thereby the yield and the quality of the peanuts are greatly improved, and more than 600 kilograms of the peanuts per mu can be yielded.

The invention discloses a chemical topping method of cotton, comprising the following steps of: a, 3-5 days before and after the first bloom period of the cotton, spraying mepiquat chloride to carry out basic chemical control so that the cotton can grow stably without growing vigorously, wherein the dosage of the mepiquat chloride is 4-10g/mu; b, before and after the full bloom period of the cotton, spraying chemical topping agent on leaf surfaces, wherein the spray should be higher than the cotton plants, the dosage of the chemical topping agent is 40-80ml/mu and 15-30kg of water is mixed; and c, 3-15 days after the spraying of the chemical topping agent, spraying the mepiquat chloride to stabilize the chemical control of plant type, wherein the dosage of the plant type is 8-15g/mu, and the topping agent comprises the following components is percentage by weight: 20-30% of mepiquat chloride emulsion, 40-60% of water and 15-25% of flumetralin emulsion. Through the method, the automatic topping of the cotton can be realized, the topping quality can be ensured, the topping uniformity of cotton fields can be improved, the labor efficiency can be improved and the labor intensity can be lightened.

The invention provides a prevention and control method of potato late blight, which is used for preventing and controlling potato late blight by comprehensive utilization of the traditional measures. The prevention and control method comprises the aspects of: potato seed treatment before sowing, management at seedling stage, cultivation measures, prediction and pre-warning, chemical control and the like. The prevention and control method is stable and permanent in prevention and control, reduces environmental pollution, is low in cost, and can predict and persistently control, thereby being amethod for realizing comprehensive prevention and control of potato late blight. From the growing conditions of the above-ground parts in field, the purpose of controlling the incidence and prevalence of late blight is achieved by adopting a late blight prediction and pre-warning system to instruct the chemical control on the field late blight. By adopting the prevention and control method, the disease plants are few, the yield is increased and is 25.7-45.8% higher than that of common planting, and the chemical spraying frequency is simultaneously reduced.

The invention discloses an organic matrix seedling raising method for a mechanically-planted paddy formula. The method comprises the following steps: selecting a seedbed and materials; seeding and raising seedlings; performing seedling-stage management including temperature management, fertilizer management, illumination management, chemical control, pest control, fertilizer dressing and seedling pulling and conveying. According to the method, a farmland or yard with high topography, ventilation, light transmission and convenience for water irrigation and drainage is taken as the seedbed, strong seedlings which conform to mechanical planting requirements are cultured, the seedling raising land is saved, the seedling raising labor strength is alleviated, and water resources are saved. Rice chaff charcoal and Chaohu lake algae peat soil which are prepared at a mass ratio of 6:4 are taken as mother soil, and 0.5% of thoroughly-decomposed organic bacterial manure, 0.1% of urea, 0.1% of potassium dihydrogen phosphate and 0.1% of seedling strengthening agent are added so as to prepare an organic matrix which is used for supplying sufficient nutritional ingredients for the seedlings, so that the cost is lowered.

The invention relates to a cold-field corn cultivation method with 1000kg per mu, belongs to the technical field of crop cultivation and solves the technical problem that existing corn cultivation methods in northeast China are low in yield. The methods includes the steps of firstly, before freeze-up in autumn, scattering organic fertilizer, subsoiling to prepare a land, and ridging the land; and secondly, performing double-row sowing of corn seeds and applying base fertilizer the next year in spring, setting a drip tape along the center line of the surface of each ridge, covering the drip tapes with mulch, and performing field water management and chemical control management to complete cold-field cultivation of corn with 1000kg per mu. Double-row 'through' cultivation on a large ridge is performed by the method, so that light and ventilation are improved. Inter-row mulching for the large ridges is adopted, so that effective accumulated temperature is increased. Proper moisture conditions obtained by drip irrigation under mulch are created. Ideal corn plant types are created under adjustment of chemical control technique, and an ultrahigh grown mode is created. By the cold-field corn cultivation method with 1000kg per mu, the cold-field corn yield per unit is increased by 50-100% as compared with that by the traditional methods. The cold-field corn cultivation method with 1000kg per mu is applicable to cold-field corn cultivation.

The invention discloses a method for preparing a SiO2 aerogel heat insulating composite through adhesive slip casting,.The method comprises the following steps of: firstly, drying at normal temperature and normal pressure by taking tetraethoxysilane and methyltriethoxysilane as a co-precursor, absolute ethyl alcohol as a reaction solvent and DMF (Dimethyl Formamide) as a drying chemical control additive to obtain a mesoporous nanometer SiO2 aerogel material with uniform pore diameter distribution; then, carrying out flexibility modification by utilizing a polyurethane elastomer to prepare modified phenolic resin glue serving as an adhesive; and preparing the SiO2 aerogel heat insulating composite by using a slip casting method. The mechanical property of the aerogel is improved, and therefore, the SiO2 aerogel material has favorable toughness and mechanical property while playing a heat insulating role.

The invention discloses a method for continuously releasing parasitic natural enemy insects, which includes distributing a plurality of release points in an area requiring control according to insect population density and control requirements, and installing a release apparatus at each point. A release cylinder of each release apparatus is in a tubular structure. A removable solid cover and a removable net cover are disposed at two ends of each release cylinder respectively. A partition net is disposed in the middle of each release cylinder. The release apparatuses for parasitic natural enemy insects are distributed in the control area, so that the natural enemy insects can be released continuously, and control time prolongation and control effect enhancement can be achieved for complex conditions of control objects, such as generation alternation, instar mixing and the like. Maintenance of populations of natural enemies is shifted to a user terminal, and easily obtained replacement hosts are used for maintenance of the populations of natural enemies, so that the intermediate procedures of control implementation are reduced, and bio-control cost is reduced. Especially, the natural enemies can be transferred to an application area in case of chemical control, so that both bio-control and chemical control can be implemented.