13 results about "Rice crop" patented technology

The invention provides a tail water relay treatment method for fish and rice rotation in a pond. The tail water relay treatment method comprises the following steps: injecting new water into a pond culture area before the beginning of a pond culture period, stocking fish fries, periodically patrolling the pond, measuring water quality, feeding baits, and carrying out fish culture operation; rice is planted in the rice planting area, sowing is conducted in early May, rice transplanting is conducted in mid-to-late May, bottom mud in the pond culture area is used as base fertilizer, and water circulation between the pond culture area and the rice planting area is completed through a first water path system and a second water path system which are arranged between the pond culture area and the rice planting area. By means of in-situ management and control of the water body and ex-situ purification after discharge, the environment of the aquaculture water body is kept stable, discharged tail water is ecologically utilized and treated, up-to-standard discharge is achieved, healthy growth of fishes and reduction of the aquaculture cost are guaranteed, a technical path and support are provided for innovation of an ecological agricultural product production mode, and the method is economical and practical.

This invention discloses a remote sensing method for extracting the rice growing season based on time-series bidirectional detection. The method includes constructing a remote sensing index time-series dataset, determining the effective planting season and planting system, extracting the Start of Season (SOS) of the growing season, identifying the rice season, and extracting key parameters of the rice growing season. This invention can accurately identify the rice season and obtain high-precision key phenological periods of rice even under complex planting systems. Compared with traditional remote sensing methods, this method can accurately identify the crop planting system in the study area, and the extraction accuracy of the rice season and its key phenological periods is higher. Furthermore, this method can achieve cross-scale transfer, has strong versatility, and is applicable to rice crops in other study areas. By accurately identifying pixels containing rice planting and their rice seasons, it can accurately monitor the growth and development process of rice crops and extract key phenological periods.

The invention discloses a dry suspending agent containing isotolfenpyrad as well as a preparation method and application thereof, and relates to the field of pesticides, the dry suspending agent is prepared from the following raw materials in parts by weight: 20 to 50 parts of pesticide active ingredients, 10 to 25 parts of wetting dispersant, 0.1 to 1 part of penetrant, 0.2 to 1.2 parts of pH regulator, 1 to 5 parts of polyalkylene oxide modified silane and 38 to 70 parts of filler, the pesticide effective component comprises isotolfenpyrad. The polyalkylene oxide modified silane adopted by the dry suspending agent disclosed by the invention can be compatible and synergistic with fillers such as potassium fulvate, amino acid and molasses powder, so that the contact angle and surface tension of the agent on leaf surfaces of crops such as rice are reduced, the adhesive force of the agent on the rice crops is increased, and meanwhile, the evaporation rate of liquid medicine during spraying is also reduced; and finally, the loss of the pesticide during spraying is reduced, the utilization rate of the pesticide liquid is improved, and the insecticidal efficiency is improved.

The invention discloses a rice growing season remote sensing extraction method based on time sequence bidirectional detection. The method comprises the steps of constructing a remote sensing index time sequence data set, judging an effective planting season and a planting system, extracting a planting season and growing season starting period SOS, identifying a rice season and extracting rice growing season key parameters. According to the method, the rice season can be accurately identified under the condition of a complex planting system, and the high-precision rice key phenological period is obtained. Compared with a traditional remote sensing method, the method can accurately identify the crop planting system of the research area, and the extraction precision of the rice season and the key phenological period thereof is higher. In addition, the method can achieve cross-scale migration, is high in universality, is suitable for rice crops in other research areas, and accurately monitors the growth and development process of the rice crops and extracts the key phenological period of the rice by accurately recognizing pixels containing rice planting and rice seasons of the pixels.

The invention relates to the technical field of pesticides, and discloses a weeding composition and application thereof. The active ingredients of the composition comprise dithiopyr and pretilachlor, the dithiopyr and the pretilachlor can play a good effect in a wide range of 6: 1 to 1: 10 in mass ratio, and particularly, the composition shows a remarkable synergistic interaction effect on weeds in a rice field in a ratio range of 4: 1 to 1: 7. In addition, a safener fenclorim can also be added into the composition, so that the safety to rice crops is remarkably improved. The composition disclosed by the invention can be used for transplanting rice and direct seeding rice, is applied in multiple periods such as pre-emergence or post-emergence, can be used for effectively preventing and removing weeds such as barnyard grass, leptochloa chinensis, digitaria sanguinalis, polygonum sylvestre, cyperus difformis, rhizoma alismatis and eleocharis yokoscensis, and has the advantages of synergism, safety, long lasting period and obvious yield increase.

The invention discloses a creation method of 2-phenethyl alcohol biosynthetic rice with a rose fragrance type characteristic. The creation method comprises the following steps: taking an mDHS1 gene, a PAAS gene and a PAR gene to construct a pRHVc-mDHS1-PAAS-PAR recombinant plasmid, transforming the pRHVc-mDHS1-PAAS-PAR recombinant plasmid into a callus through an agrobacterium tumefaciens-mediated method, and carrying out screening and plant regeneration of resistant calluses to obtain rice with overexpressed mDHS1, PAAS and PAR genes. According to the rice, 2-PE can be effectively synthesized in rice endosperm. Based on a synthetic biological technology and metabolic engineering, the pRHVc vector is used for overexpressing mDHS1, PAAS and PAR genes in rice endosperm through a transgenic means, 2-PE is efficiently and directionally synthesized and stably enriched in rice grains, and the economic added value of rice crops is remarkably increased.

This invention discloses an intelligent navigation four-row rice transplanter and its transplanting method. The invention includes a chassis, a seedling box device, a seedling picking device, and an auxiliary seedling delivery device. The invention plans the global operation path through a controller and uses a GPS navigation module for positioning, achieving unmanned operation. The seedling picking device's lifting mechanism drives its elevation to adapt to different planting depth requirements. Furthermore, the longitudinal movement device of the seedling box device drives the elevation of the seedling box assembly, adjusting the height difference between the seedling box assembly and the seedling picking mechanism, thereby adjusting the amount of seedlings picked by the picking claws in the seedling picking mechanism to adapt to different transplanting agronomic requirements. The auxiliary seedling delivery device assists in delivering seedlings to the seedling box assembly. This invention achieves unmanned operation with intelligent navigation along the rice crop row path, adaptive elevation of the seedling box assembly and seedling picking arm for different paddy fields, rice seedling picking, and fully automated rice transplanting, effectively improving the level of intelligence in rice transplanting.

The application provides application and methods of OsGASR1 genes in regulating aluminum toxicity stress tolerance of rice, and belongs to the technical field of plant genetic engineering. By adjusting the expression amount of the OsGASR1 gene in the rice genome, the aluminum toxicity stress tolerance of the rice can be changed; overexpression of the OsGASR1 gene in the target rice germplasm genome can improve the aluminum toxicity stress tolerance of the rice, and the application not only provides new theoretical evidence for the research on the aluminum toxicity tolerance of the rice, but also provides a new target gene or new material for cultivating new varieties of high-quality aluminum toxicity tolerance rice (crops).

The invention provides a rice field methane and nitrous oxide emission reduction method based on biological coverage. The rice field methane and nitrous oxide emission reduction method comprises the following steps that S1, astragalus sinicus seeds are evenly sown in a field 10-20 days before late rice is harvested; after late rice is harvested, milk vetch grows and covers the rice field, and phosphate fertilizer is applied in winter; s2, 10-15 days before rice transplanting in spring of the next year, the overground part of astragalus smicus in the full-bloom stage is harvested and smashed, and the smashed part is evenly spread to the surface of the rice field to be turned over and returned to the field; the spreading amount of the astragalus sinicus is 10%-30% of the theoretically required nitrogen fertilizer application amount for replacing rice; s3, nitrogen-phosphorus-potassium base fertilizer is applied 1-7 days before rice transplanting, azolla is evenly spread to the field surface on the same day of rice transplanting, azolla rapidly grows and propagates in the rice field to cover the whole field surface, and field management is conducted according to the growth requirements of rice crops. By means of the method, the emission amount of methane and nitrous oxide in the rice field can be effectively reduced, and economic benefits and ecological benefits of agricultural production are both considered.

The invention relates to the technical field of rice planting. The invention provides a rice planting method for improving biological nitrogen fixation amount through mixed sowing of green manure, which comprises the following steps: (1) before previous-crop rice is harvested or after high-crop rice is harvested, sowing green manure crops, and performing green manure field management after sowing; (2) measuring the yield of green manure crops before rice sowing, and then turning and pressing in situ; (3) sunning upturned soil after turning and pressing, then irrigating water-logged compost, preparing soil after applying base fertilizer, determining the fertilizing amount according to the yield of green manure crops, and planting rice. According to the method, efficient utilization of green manure is realized through a three-in-one strategy of maximization of biological nitrogen fixation amount, high efficiency of nutrient circulation and precision of fertilization management. According to biomass dynamic simulation of green manure, accurate nitrogen reduction is achieved, efficient utilization of nutrients can be achieved to the maximum extent, meanwhile, nutrient loss is reduced, and the environment cost is reduced.

The invention relates to the field of agricultural disaster early warning, in particular to a rice disaster risk early warning method and device, a terminal and a storage medium. The method comprises the steps of obtaining medium and long term weather forecast data and real-time field environment data of rice in a target area, performing spatial data alignment to obtain multi-source fusion data, and inputting a pre-trained rice crop model to predict a rice physiological state evolution trajectory; identifying meteorological disaster factors and carrying out coupling analysis on the meteorological disaster factors and physiological state evolution trajectories to obtain physiological risk indexes; calculating a dynamic risk threshold value in combination with real-time field environment data, and comparing the dynamic risk threshold value with a physiological risk index to generate disaster early warning information; and matching regulation and control suggestions from the agronomic measure knowledge base based on the disaster early warning information, converting the regulation and control suggestions into control instructions, and feeding back and executing the control instructions. The invention further discloses a corresponding device, a terminal and a storage medium. The technical effects that the rice disaster risk is accurately warned, reasonable regulation and control suggestions are generated and executed according to the actual situation, and the yield reduction loss of rice caused by disasters is reduced are achieved.

This invention discloses a cationic herbicide with reduced soil passivation, using a cationic polymer solution as the solvent and the cationic herbicide as the solute. This invention combines the cationic polymer with the cationic herbicide, utilizing the cationic polymer to competitively bind to the soil, reducing the soil's adsorption of the cationic herbicide, thus slowing down the rate of soil passivation of the cationic herbicide. The cationic herbicide with reduced soil passivation effectively enhances the efficacy and duration of bipyridine herbicides, providing long-term control of weeds in the soil, thereby improving weed control efficiency. It can be used for soil-applied herbicides for weed control. When used in conjunction with a cationic herbicide-resistant direct-seeded rice crop, it allows for weed control while ensuring normal rice growth, and the herbicide can remain on the weed emergence site for a period of one to two weeks, meeting the requirements for weed control in direct-seeded rice fields.

The invention discloses a land preparation and sowing preparation method for late-crop oilseed rape of National Day rice, which comprises the following steps: S1, digging a drainage ditch system comprising furrow ditches, waist ditches and surrounding ditches between rice rows after the previous-crop rice is transplanted with live plants and before closing the rows; s2, after the previous crop of rice is mature and harvested, straw smashing and returning operation in the field is completed within 20-28 hours; s3, after straw smashing and returning operation is completed, rotary tillage soil preparation operation is carried out, so that soil reaches a to-be-sown state, and the drainage ditch system is opened; s4, if sowing is selected, when the soil water content is reduced to 25%-30%, oilseed rape sowing is carried out; passive waiting is changed into active intervention, the field drainage and moisture dissipation speed is remarkably increased, weather risks are effectively avoided, the golden sowing period of oilseed rape before the end of September is ensured, meanwhile, the working peak of agricultural machinery is dispersed, the working efficiency and the sowing quality are improved, and reliable technical guarantee is provided for high and stable yield of oilseed rape.