268 results about "Grain filling" patented technology

The nutritious rice with rich organic selenium and zinc is produced through diluting organic selenium and zinc chelating agent solution containing selenium in 3.56-7.12 g / kg and zinc in 45.30-67-94 g / kg in the amount of 200 g / mu with water in 150-300 times, spraying the diluted solution to rice leaf in the tillering period, booting period and grain filling period of rice for rice to absorb and convert, and other steps. The nutritious rice has selenium and zinc content of 0.070-0.270 ppm and 12-25 mg ppm separately, 2-10 times and 2-5 times higher than common rice product separately. The nutritious rice of the present invention may be used in producing public food for human body to replenish selenium and zinc.

The invention discloses a method for modeling a rice and wheat leaf nitrogen content spectrum monitoring model and belongs to the field of nondestructive monitoring of crop growth information in precision agriculture. The method comprises the following steps of: fusing rice and wheat canopy leaf reflectance spectrum data which is acquired by a field high-spectrum radiometer with rice and wheat canopy leaf nitrogen content data; and establishing a canopy leaf nitrogen content spectrum monitoring model orienting different growth periods of rice and wheat based on narrow band and wide band combination. The optimal vegetation index orienting a rice and wheat jointing and booting stage and a heading and grain filling period is established by utilizing multi-point rice and wheat field test data in many years; and rice and wheat canopy leaf nitrogen content common characteristic wave band and bandwidth are developed. The model covers different species and different nitrogen levels of rice and wheat, utilizes a data validation model in an independent year, and is high in universality and high in accuracy.

The invention belongs to the field of rice cultivation, and particularly relates to a cultivation method suitable for no-tillage rice in a fixed compartment of an oil crop-medium rice field. The cultivation method comprises the following steps that: (1) rice seeds are coated by using dry-raised nurse, thick mud and dry fine soil serving as coating agents, wherein the components comprise 7.9 to 12.5 percent of dry-raised nurse, 25 to 26.3 percent of rice seeds, 12.5 to 13.2 percent of thick mud with 37 percent of water content and 50 to 52.6 percent of dry fine soil with 3 percent of water content in percentage by mass; the rice field is finished as required and the soil moisture is kept; and keeping the seedling age at 15 to 18 days; (2) the compartment width of the oil crop field is 1.2 meters, the width of the ditch is 0.3 meter, and the depth of the ditch is 0.25 meter; the rape seedlings are applied to the field; a ternary compound fertilizer of which pure nutrients comprise 15 percent of N, 15 percent of P2O5 and 15 percent of K2O is applied, and 30 kilograms of pure nitrogen is applied in each mu; 5.80 kilograms of zinc is applied in each mu; and 4.8 kilograms of boron fertilizer is applied in each mu, and the ditch is kept full of water; (3) rice seedlings with 50 to 100 grams of soil in each seedling in 15 to 18 days are directionally thrown according to a row space of 20 centimeters; and (4) the ditch is kept with water and the compartment surface has no water after throwing the seedlings till the heading stage, and dry and wet alternated cultivation is adopted from the grain filling stage to the maturation stage. Compared with the conventional method, the yield is averagely increased by 8.7 percent.

The invention discloses a wheat plantation method comprising the following steps: 1, irrigating and drenching a planting field, deep ploughing for the first time after irrigation, applying base fertilizer on the planting field after the first time deep ploughing, and deep ploughing the planting field for the second time after the base fertilizer is applied; 2, using insecticidal traditional Chinese medicine medicament to make seed dressing for aired wheat seeds, using sterilization traditional Chinese medicine medicament to make seed dressing for aired wheat seeds, thus obtaining dressed wheat seeds, and sowing the dressed wheat seeds at a 3-6cm planting depth according to a planting quantity of 12-20kg / mu; 3, watering for sprouting and applying topdressing; 4, spraying mepiquat and urea for the wheat; 5, spraying foliar fertilizer; 6, carrying out irrigation in the grain filling stage for the wheat; 7, harvesting the wheat 180-190 days after sowing. The method can shorten wheat growth period, improves budding rate, reduces environment pollution, reduces wheat pesticide residual, and improves wheat yield.

The invention discloses a preparation method for wet method forming micropore filtration separation material, which includes steps of (1) carrying out pulping process for fibrillatable fiber to prepare fullyfibrillatable fiber raw material; (2) dispersing the fiber raw material into water to obtain paste; (3) uniformly dispersing grain with diameter of 1nm-1mum into water; (4) mixing the grain water dispersing liquid of the step (3) with the paste of the step (2) and uniformly stirring; (5) forming on net and drying. The micropore filtration separation material prepared by the present invention can be used for filtration material, battery diaphragm material, electrolytic capacitor paper and double-electric layer capacitor diaphragm. The invention can effectively increase uniformity of bore diameter distribution, so that grain filling material is not easily to fall off.

The circulating type grain drying machine is provided in which, at the grain filling operation, a controller causes a first heated air generator to operate and a second heated air generator to stop operating, and also causes, according to the detected values of the outside air humidity from an outside air humidity detector, an airflow control section to operate so as to change the quantity of the airflow by an air exhaust section. Also, at the drying operation, the controller controls the first heated air generator and controls the temperature of the heated air supplied into each heating pipe according to the detected values of the grain water content value, and controls the second heated air generator and controls the temperature of the temperature of the heated air supplied into the drying section according to the detected values of the grain water content values and the grain filling amount.

The invention relates to a breeding method of a selenium rich crop, in particular to a breeding method of selenium rich wheat; the method comprises the following steps: bagasse is taken as major raw material, and added with sodium selenite, ammonium sulfate and lactobacillus fermented substance, the proportion by weight of the added raw materials is as follows: 35-50 parts of bagasse, 0.5-2 parts of sodium selenite, 2-5 parts of ammonium sulfate and 0.05-0.1 part of lactobacillus fermented substance; the selenium rich fermented fertilizer is produced by a fermentation method; before planting wheat, 10-20kg of fertilizer obtained from step a is fertilized on each mu of wheat field; the sodium selenite, the ammonium sulfate and potassium dihydrogen phosphate are mixed according to a weight ratio of 1:1:1, evenly stirred and added with water to be made into a foliar fertilizer with concentration of 0.05-0.2%; the foliar fertilizer is sprayed in the shooting stage, early grain filling stage and middle grain filling stage of wheat; after the wheat is ripe and harvested, the selenium rich wheat product is obtained. The breeding method solves the problem that the former selenium rich products are not ideal enough in selenium content, and increases the content of selenium in the wheat.

The invention relates to a high-yield cultivation method for winter wheat in the Huanghuaihai region. The high-yield cultivation method comprises the following five main steps: (1) performing soil preparation and sowing; (2) managing before winter; (3) managing in spring; (4) managing in middle and later stages; and (5) harvesting. According to the technical mode of selecting a winter variety, returning straw to the field, applying fertilizers, performing deep loosening and deep digging, performing rotary tillage and soil preparation, performing broad accurate sowing, mechanically pressing, watering in winter, backwards shifting nitrogen fertilizers, spraying once to prevent pests and diseases, dry and hot wind and lodging, and mechanically harvesting, the high-quality wheat variety which is high in yield, stable in yield and strong in lodging resistance is selected, the soil fertility is raised, seeds are sowed at proper time, the proper pre-winter management is performed, the survival rate of the wheat seedlings is increased, and the uneven growth is prevented; organic fertilizers and inorganic fertilizers are reasonably combined, the technology of backwards shifting the nitrogen fertilizers and applying potassium in stages is applied, the nutrient needs of the wheat at different stages are sufficiently guaranteed, a reasonable group structure is established, the spikelet floret degeneration is reduced, the kernels per spike are increased, the functional period of green leaves is prolonged, the grain filling is promoted, the thousand seed weight is increased and the high-yield breakthrough is realized.

The invention discloses a water-saving fertilizing method for wheat. The water-saving fertilizing method comprises the steps that 1 seeding is conducted before winter, and land is arranged into strip-shaped farmland before the seeding is conducted; seeding is conducted, a fertilizing groove is arranged in the middle position of two adjacent rows, the fertilizing groove is divided into two types, namely a deep groove and a shallow groove, the deep groove and the shallow groove are arranged at an interval, and then fertilizing is conducted; after the fertilizing is conducted, fertilizer is covered with straw or straw fermentation materials; 2 when the wheat is in a period from a jointing stage to booting stage, one-time irrigating is conducted, by adopting the mode that irrigating is limited in quantity and conducted on separated farmland, the two adjacent farmland is irrigated with 35-45 mm water and 15-25 mm of water respectively; 3 when the wheat is in a grain filling stage, by adopting the mode that the irrigating is limited in quantity and conducted on separated farmland, the water irrigating amount of the two adjacent farmland is exchanged with irrigating last time. According to the water-saving fertilizing method for the wheat, the fertilizing method is scientific and reasonable, the use ratio of the fertilizer is effectively improved, the labor intensity of fertilizing is relieved, the water used for irrigating is effectively used, the water resources are saved, the important economic significance and social significance are achieved, and the method is worth using and popularizing.

Disclosed are a rice growth regulator, a preparation method and a usage method thereof. The preparation method of the rice growth regulator includes using main raw materials of, by mass, 0.002%-0.0025% of abscisic acid, 0.5%-2% of urea, 0.1%-0.5% of boric acid and 0.2%-0.5% of monopotassium phosphate, dissolving the abscisic acid by means of ethanol, and evenly mixing the abscisic acid with other raw material aqueous solutions. Foliar spraying is performed at the middle and late stage of the growth of rice, so that stem-sheath assimilative matter translocation and grain filling of the rice are promoted, the setting percentage is increased, rice qualities are improved, and yields are increased; and besides, draught resistance and stress resistance abilities of the rice can be improved. The rice growth regulator, the preparation method and the usage method thereof are safe and environment-friendly, simple in preparation, low in cost, obvious in effect and easy to popularize.

The invention discloses an aquatic and dry amphibious planting method for rice, which comprises the following steps of: 1) dry farming: conducting dry farming or dry field conservative farming under the condition of a dry field; 2) ridging: using a ridging machine to complete ridging at one step or using a furrowing machine to open furrows to form a required ridge mode; 3) rice seedling transplanting: filling water into the furrows and transplanting rice seedlings when the water and the surface of the ridges are on the same level; and 4) water management: filling water to the level of the surface of the ridges at a rice seedling transplanting stage; implementing half-furrow water infiltration irrigation at a seedling emergence stage, a green turning stage, a tillering stage, a heading stage, a grain filling stage and all future growth stages; and shifting to a dry farming state when droughts occur, filling running water to replenish water supply at a proper time and filling deep water in rainy seasons to prevent flooding, wherein the stored water is used for preventing droughts. The aquatic and dry amphibious planting method has the advantages that the water can be saved, the pollution can be controlled, the crop yield can be improved, the farming cost can be saved, the agricultural labor productivity can be promoted, and the economic benefit, the ecological benefit and the social benefit can be improved at the same time.

The invention discloses a method for producing rape-middle rice in a crop rotation way in cadmium-moderately-contaminated soil while repairing, and belongs to the technical field of environmental governance of the contaminated soil. The method comprises the following steps: (1) planting rape Zheyou 50 in the cadmium-contaminated soil, spraying a cadmium activator on rape leaf surfaces respectivelyin a bolting period and a flowering period, cultivating until harvest, and removing all; (2) leveling the soil, applying a cadmium passivation conditioner and evenly mixing with surface soil; and (3)after 6-8 days, transplanting middle rice Yongyou 15, performing submergence treatment during a whole growth period, spraying a zinc-enhanced cadmium resistance control agent on leaf surfaces respectively at a tillering stage, a booting stage and a grain-filling stage, draining water in the fields one week before the harvest of the middle rice, and removing all straw after the harvest of the middle rice. The method disclosed by the invention utilizes crop rotation of the cadmium-enriched rape and the cadmium low-accumulation high-quality middle rice to cooperate with reasonable water management, and can be used for repairing the soil while guaranteeing the safe and high-quality production of crops.

The invention relates to an oxygenating cultivation method for irrigating rice irrigation with micro-nano bubble water, belonging to a rice cultivation method. The method comprises the following steps: 1) conditioning a rice seedling bed, thinly sowing seeds, and cultivating strong seedlings tillering; 2) carrying out soil preparation process and deeply applying basal fertilizers before transplanting, and then transplanting young seedlings; 3) using micro-nano bubble oxygenated water to irrigate rice after transplanting, wherein the rice should not be irritated with the water again until the water is naturally consumed to enable transform the field surface to a wetting state, so that repeated alternation between shallow water and wetting can be formed; applying tillering fertilizers within 7-10 days after transplanting the young seedlings; and drying the field in time after the seedlings grow to enough height; and 4) preventing pests and plant diseases in due time, and harvesting the rice when 95% of grains in the entire field are in the yellow ripe state. By using the invention, the root zone oxygen environment of rice is improved, the root system growth development and the function establishment of rice are promoted, raises the absorption efficiency and utilization efficiency of nitrogenous fertilizer for rice are raised, the contents of available nutrients in soil are increased, obviously the low-position tiller proportion of rice at tillering stage is increased so as to improve percentage of earbearing tiller, and can postpone the leaf senescence can be postponed in grain filling stage, thereby obviously raising setting percentage and improving the rice yield.

The invention discloses a chicken and duck mixed ecological culturing technical method under rice ladder-type cultivation, and belongs to a culturing method. The method comprises the following steps of: forming ridges in a rice field with enough base fertilizer; after the rice is cultivated for 3 to 7 days, putting 15 to 20 young ducks of 20 to 40 days into the rice field; keeping a water layer of over 5 centimeters for a long term in a ditch between two ridges; at the tillering final stage of the rice or at the differentiation initial stage of young ears, putting 15 to 20 chickens of 35 to 45 days into the rice field; and from the growth stage to the grain filling stage of the rice, taking back the chickens and the ducks in time from the field. The method has the advantages that: the land area is fully utilized, and the light area is increased; the chickens are fed movably on the ridges, the ducks are fed movably in the ridge ditches, and the rice is grown on the ridges; chicken manure and dust manure are directly returned to the field, and the application amount of inorganic fertilizer is reduced; the residue amount of the pesticide in the rice and the soil is reduced; the water is saved; and the added value of the rice is increased, and the income of peasants is improved.

A dedicated fertilizer for promoting grain-filling in rice and a preparation method therefor, belonging to the technical field of fertilizers for agricultural production. The fertilizer is prepared by using the following raw materials in parts by weight: 40-50 parts of urea, 18-30 parts of superphosphate, 12-27 parts of potassium chloride, 7-15 parts of potassium silicate, 3-5 parts of bentonite, 4-11 parts of sodium tetraborate decahydrate, 0.1-0.3 parts of N-(N-butyl)thiophosphoric triamide, 0.2-0.8 parts of matrine extract, 0.5-1.1 parts of kudzu extract and 0.5-1.0 parts of aloe extract. A product of the present invention can remarkably promote yield when applied to rice, the production cost is reduced, and the utilization rate of nitrogen fertilizer is improved.

The invention discloses a fortified rice which is rich in organic selenium, zinc and chromium and a production method thereof; the fortified rice is produced by mixing and matching of selenium-rich rice which contains 0.3 to 0.5 mg / kg of selenium, zinc-rich rice which contains 8 to 10mg / kg of zinc and chromium-rich rice which contains 1 to 2mg / kg of chromium; the production method comprises the following steps: in the grain-filling stage of the paddy rice, selenium solution, zinc solution, and chromium solution are sprayed in different fields respectively so that nutrients and trace elements enter into the body of paddy rice directly to be involved in the metabolism and organic synthesis of the paddy rice, enhance the intensity of grain filling, promote the prematurity of the rice and enrich the content of selenium, zinc and chromium in the grains, wherein, the selenium solution is prepared by the following ingredients by weight: 1 percent of selenium dioxide, 1.5 percent of methionine, 5 percent of fulvic acid and 92.5 percent of water, which are stirred and dissolved; the zinc solution is prepared by the following ingredients by weight: 20 percent of zinc sulfate with 7 water of crystallization, 1.5 percent of methionine, 5 percent of fulvic acid and 73.5 percent of water, which are stirred and dissolved; and the chromium solution is prepared by the following ingredients by weight: 15 percent of organic trivalent chromium, 3 percent of fulvic acid and 82 percent of water, which are stirred and dissolved. The paddy rice obtained by the method matures 5 to 7 days averagely and the yield of the paddy rice is increased by 7 to 10 percent per mu, or per 667 square meters.

An apparatus for indicating a grain tank fill level for a grain tank (20) of an agricultural harvester (10), the harvester (10) having a chassis (12), an operator cabin (18) on the chassis (12); a threshing, separating, and cleaning means (24) on the chassis (12) for processing crop, a grain tank (20) on the chassis (18) for storing harvested grain and having an actual fill level of grain, a display (48) disposed in front of the operator in the direction of travel for displaying a fill level of the grain tank; a calculating means (46) coupled to the display (48) for calculating a fill level of the grain tank to be displayed on the display (48), and an operator input device (70) coupled to the calculating means (46) for selecting between first and second modes of operation, wherein the calculating means (46) is configured to repetitively and automatically calculate the fill level of the grain tank (20) in a first mode of operation and configured to repetitively and automatically indicate a scaled fill level that is scaled to a reference fill level different from the actual fill level in a second mode of operation, and further wherein the operator input device (70) is configured to indicate to the calculating means (46) the reference fill level when the operator input device (70) is selected by the operator.

The invention discloses a pollution-free high-yield cultivation method of summer soybeans. The method includes the steps that high-yield improved varieties are selected, enough base fertilizer is applied, organic fertilizer, standard phosphate fertilizer and standard nitrogen fertilizer are applied before sowing, weeds in fields are removed, and high-concentration nitrogen-phosphorus-potassium compound fertilizer is applied; the soybeans are sown during the period from the last ten-day period of May to the first ten-day period of June, wherein the sowing line spacing ranges from 28cm to 40cm, and the sowing depth ranges from 3cm to 4cm; closed weedicide is utilized to evenly spray the soybeans, strong seedlings are cultivated on the basis of full stand and even stand in the mid-to-late June, the operation of checking the seedlings and filling the gaps with the seedlings is immediately conducted after emergence of the seedlings, and the 15,000 to 18,000 seedlings are reserved per mu after thinning; two to three times of intertillage is conducted during the period from the first ten-day period of July to the middle ten-day period of July, urea dressing is conducted, watering is conducted to prevent drought, and spraying is conducted according to the insect pest situation; grain filling fertilizer is applied during the grain filling period from the early-to-mid August to the mid-to-late September; the soybeans are harvested in time during the period from the mid-to-late September to early October, and the grains are aired in time after being harvested and threshed, and the grains can be put in a storage and stored when the water content of the grains decreases to 13%. The method has the advantage that the yield per mu of the summer soybeans is more than 200 kilograms.

The invention discloses an application of an OsNPF5.16 gene for increasing single-plant yield of paddy rice and belongs to the field of plant gene engineering. The amino acid sequence of encoding proteins of the OsNPF5.16 gene is represented as the SEQ ID No.1; and the sequence of a cDNA is represented as the SEQ ID No.2. In the method, an OsNPF5.16 gene over-expression plant and an OsNPF5.16 gene interference plant of paddy rice are constructed, and it is found that tiller number, spike number and grain filling number of normal paddy rice are increased by increasing expression of the OsNPF5.16 gene, so that the OsNPF5.16 gene can be applied to paddy rice selection breeding to increase yield of the paddy rice. The OsNPF5.16 gene has important application value of expounding influence of nitrogen on growth and development of plants and improvement on plant type of the paddy rice.

The invention discloses a method for spraying field exogenous hormone for improving the vigor of hybrid rice seeds. The method comprises the following five steps of firstly, planting parents and carrying out artificial supplementary pollination; secondly, preparing an exogenous hormone spraying agent; thirdly, determining the dosage of the spraying agent and the spraying area ratio; fourthly, determining the spraying date; and fifthly, spraying the exogenous hormone. When the method is used for carrying out exogenous hormone spraying treatment on female rice ears of hybrid rice at the grain filling stage, the vigor of the F1-generaiton seeds of the hybrid rice is effectively improved, and meanwhile the yield of the hybrid rice is also increased, so that grains are to be harvested in the next year. The method is simple and convenient, short in period, low in cost and rapid in taking effects and can also be used as a supplementary means for breed improvement to a certain extent.

The invention discloses an application of a nitrate transportation gene OsNRT1.9b in selective breeding of paddy rice and belongs to the field of plant gene engineering. The amino acid sequence of a protein encoded by the OsNRT1.9b gene is represented as the SEQ ID No.1 while the cDNA sequence is represented as the SEQ ID No.2. In the invention, by constructing an OsNRT1.9b gene overexpression plant and an OsNRT1.9a gene mutant plant of paddy rice, it is found that by increasing the expression of the OsNRT1.9b gene, normal tiller number and single-plant ear number of paddy rice are increased,and grain filling number and productivity of single plant are increased, so that the OsNRT1.9b gene can be used in selective breeding of the paddy rice so as to increase the yield thereof. The OsNRT1.9b gene has significant application value in the aspect of expounding influence of nitrogen on growth and development process of plants and improvement on plant type of the paddy rice.

The invention discloses a method for preparing tungsten bar used for rolled plates, which relates to a method for preparing indissolvable metal by means of a powder metallurgy process, and is characterized in that tungsten powder with chemical composition in accordance with requirements of GB / T3458-2006 FW-1 and with the granularity of respectively 1.8 Mum, 2.0 Mum and 2.2 Mum is adopted to be doped; in each part of the mixed tungsten powder, the weight percentage of the tungsten powder with the three different granularities is 20 percent, 60 percent and 20 percent in sequence. Excellent grain filling is realized; extremely high sintering density can be obtained; simultaneously, the uniformity of crystal grain structure is guaranteed. A method of medium frequency induction sintering with variable frequency hydrogen is adopted to sinter the blank, namely, the sintering is carried out under 2000 DEG C with the frequency of 2500Hz; frequency is lowered to 1000Hz-1500Hz when temperature is higher than 2000 DEC C; eddy skin depth can be improved by 4-5 times; actual sintering temperature is higher than the medium frequency induction sintering with the hydrogen with relatively fixed frequency; the size of sintered blank grain is moderate and is suitable for following rolling.

The invention discloses a bulk grain transporting vehicle carriage with forcible ventilation and natural ventilation functions. The bulk grain transporting vehicle carriage comprises an outer carriage body, an inner carriage body, screens, air window assemblies, ventilation openings, a grain filling opening and a heat exchanger. Interlayers of six wall boards of the outer carriage body are filled with polyurethane foam, and heat can be well preserved. The air window assemblies are arranged at the top and the two side faces of the top of the carriage and used for natural ventilation. After the screens are installed on the inner carriage body, grain is contained in the inner carriage body. The heat exchanger is installed on the side, close to a vehicle head, of a vehicle carriage body, the bulk grain in the carriage is forcibly ventilated through the heat exchanger, and the grain can be continuously ventilated and cooled in the environments at the low temperature above -20 DEG C and at the high temperature. By the adoption of the bulk grain transporting vehicle carriage, forcible ventilation and natural ventilation are comprehensively adopted, and the requirement for quick ventilation and cooling of the grain, as poor heat conductors, in the long-distance transporting process in different seasons and different areas is met. The bulk grain transporting vehicle carriage is good in economical efficiency and high in practicality and has the popularization value.

The invention discloses a vertical grain drying device used for agriculture. The vertical grain drying device comprises a heating tower, a hot air tube, a grain filling port, a hot-air blower, exhaust fans, a cavity and a feed auger. A feed hopper is arranged at the upper end of the grain filling port. An upper end opening of the feed hopper is larger than a bottom opening of the feed hopper. A cavity is formed in the feed hopper. A liquid inlet tube is arranged on the left side of the bottom of the cavity. A liquid outlet tube is arranged on the right side of the upper end of the cavity. A wind collecting hood is arranged on the right side of the upper end of the feed hopper. The discharge end of the feed auger is arranged above the feed hopper. The right end of the wind collecting hood is connected with a dust suction tube. A third support is arranged at the bottom of the left end of the dust suction tube. The bottom of the third support is welded to the heating tower. According to the vertical grain drying device used for agriculture, the cavity, the liquid inlet tube and the liquid outlet tube are arranged in the feed hopper and can be used for preliminary preheating of grain, and accordingly, the drying rate of the grain is increased; and a discharge tube and a discharge auger are arranged and enable the grain to be automatically discharged, and accordingly, the labor intensity of farmers or workers is relieved.

The invention provides a method for planting selenium-rich corns and belongs to the technical field of production of selenium-rich agricultural products, wherein the method is low in cost and the corns are rich in organic selenium. According to the method provided by the invention, a selenium-rich organic fertilizer and a selenium-rich nutrient solution are applied to the corns at different growth stages; and the method has key points of: when leveling land before planting the corns, applying 30-50 kg of the selenium-rich organic fertilizer per mu, wherein the selenium content of the selenium-rich organic fertilizer is greater than or equal to 50 mg / kg; and after the grain-filling period of the corns for 7-10 days, spraying 80-100 ppm of the selenium-rich nutrient solution on the corn leaves per mu, and after the corns are ripe, obtaining the selenium-rich corns. The planting method is simple and low in production cost, and the planted selenium-rich corns are high in organic selenium content.

The invention discloses a wheat high-yield high quality plantation method comprising the following steps: 1, soil working: applying urea in a planting field between the last 10 days of September and the beginning of October, cleaning the surface of the planting field, irrigating the field so as to keep the soil water-holding capacity to be at 6-9%, and selecting 45-55% potassium permanganate disinfectant and 45-55% phoxim; 2, sowing: selecting qualified wheat variety, sowing between 5th of October and 25th of October, wherein the seeding rate is 9-12kg / 667sq.m, sowing depth is 3-5cm, and basic fertilizer is applied in the sowing period; 3, applying fertilizer: applying nitrogenous fertilizer in a seedling stage, applying phosphate fertilizer in a node pulling stage, applying potash fertilizer in a booting stage, applying boron fertilizer in a heading stage, applying urea and calcium magnesium phosphate fertilizer in a flowering stage, and applying decomposed organic fertilizer in a grain filling stage. The plantation method can effectively improve the wheat yield and quality.

The invention discloses a method for remediating cadmium-contaminated farmland soil by utilizing rape-middle-season rice rotation. The method comprises the following steps: in a first year, soil preparation is performed on the cadmium-contaminated farmland soil to be remediated, an activated base fertilizer is applied to the soil, and Cd-hyperaccumulation rape seeds are sown in a broadcast sowing manner; a foliar activator is sprayed to rapes in the bolting and flowering stages of the rapes; in a second year, the rapes are harvested; after the rapes are harvested, a passivation conditioning agent is applied into the soil, harrowing and waterflooding are performed uniformly, cadmium low-accumulation middle-season rice seeds are directly sown into the cadmium-contaminated farmland soil, and cultivation management is performed; in the tillering, booting and grain-filling stages of middle-season rice, a foliar inhibitor is sprayed to the middle-season rice; and after the rice is ripened, the middle-season rice is harvested. The method provided by the invention adopts the Cd-hyperaccumulation rape and cadmium low-accumulation middle-season rice rotation system, the system cooperates with the activated base fertilizer, the foliar activator, the passivation conditioning agent and the foliar inhibitor, so that the absorption of cadmium in the soil to be remediated by the rapes and the rice is significantly improved, and the remediation effect on the cadmium-contaminated farmland soil is further improved.

The invention provides a planting method for organic rice. The planting method comprises the steps of selection of a planting base, preparation before planting and daily management. According to the invention, fermented chicken manure is used as a main fertilizer and reasonable topdressing of fertilizers is carried out, so main nutritional requirements of rice growth are met; in particular, energy-saving red lanterns are used to irradiate the rice in the night after the rice is in the grain-filling stage, so rice yield can be effectively improved and rice quality can be ensured; at the same time, high-temperature sterilization is carried out before the fermentation of the chicken manure, so harmful bacteria in the chicken manure can be effectively sterilized, thereby achieving the purpose of rice protection; limewater is added during irrigation of a rice field, so the growth environment of the rice can be effectively improved and pests in soil and water can be killed; and breeding of ducks in the rice field enables weeds to be removed and pests to be killed.

The invention discloses a positive and reversed distant hybridization method of tideland smooth cordgrass and rice. The positive and reversed distant hybridization method comprises the following steps of sorting spikes, carrying out castration, pollinating and the like in positive and reversed hybridization processes. The positive and reversed distant hybridization method comprises (1) positive hybridization: rice (female)*smooth cordgrass (male): a method of carrying out hot air castration and flower promoting and pollen suction on rice (female), and pollinating smooth cordgrass (male) properly is adopted; rice spikes are treated by hot gas and anthers are adsorbed and removed by a pollen suction device, so that a process of killing male by warm liquid and carrying out spikelet shearing castration of a rice female parent is omitted; proper pollination is adopted so that a spikelet shearing flower promoting process of a smooth cordgrass male parent is omitted, and seeds obtained by hybridization are unhusked rice, but not rice grains, and the seeds have good grain-filling rate; and (2) reversed hybridization: smooth cordgrass (female)*rice (male): a continuous castration and pollination process of the smooth cordgrass (female) is adopted. The castration is carried out while the pollination is carried out so that a process of killing male of the smooth cordgrass (female) by the warm liquid and carrying out rice flower promotion of the smooth cordgrass (female) is omitted, and damage to spikelets is reduced. With the adoption of the two positive and reversed hybridization methods, the hybridization maturing rate, the emergence rate and the working efficiency are greatly improved. The positive and reversed distant hybridization method can be used for cultivating smooth cordgrass / rice anti-salt grain and feed dual-purpose type crops which are suitable for growing in saline and alkaline lands.

The invention relates to the technical field of packing and sealing machine, in particular to an automatic speed servo adjusting filling and sealing packaging machine comprising a cup placing mechanism, a fruit grain filling device, a filling machine, a film uncoiling mechanism, a sealing machine, a covering device and a speed servo adjusting cup feeding device. The speed servo adjusting cup feeding device comprises a cup conveying chain connected to a speed adjusting servo motor through a servo gear, the cup conveying chain is provided with cup dies with large diameters and cup dies with small diameters at intervals in an adjacent manner, the speed adjusting servo motor controls the operating speed of the cup conveying chain through a PLC, large and small cup mouth sealing switch is implemented, and a large pressing head and a small pressing head are arranged at the sealing pressing port of the bottom of the sealing machine. The machine has the advantages that sealing manners can be adjusted rapidly according to the production requirements, producing efficiency is improved, the design of a production line is integrated, production labor can be saved, purpose of reducing the production cost is achieved, energy consumption is reduced, and the requirements of energy saving and environment protecting are met.