104 results about "Grain yield" patented technology

The invention discloses a grain yield estimation method based on a land-gas coupling model and a machine learning algorithm, and relates to the technical field of agricultural meteorological prediction and intelligent decision making, and the method comprises the following steps: S1, carrying out the kernel-level algorithm fusion of a dynamic corn growth model and a weather research and forecast model, constructing a WRF-Crop coupling system, and carrying out the kernel-level algorithm fusion of the WRF-Crop coupling system; and the WRF-Crop coupling system realizes real-time interaction of transpiration and albedo change of the corn canopy and temperature, humidity and radiation data through a bidirectional data channel. According to the grain yield estimation method based on the land-gas coupling model and the machine learning algorithm, the limitation of isolated operation of a traditional dynamic corn growth model and a meteorological model is broken through by constructing a WRF-Crop bidirectional coupling model, dynamic mutual feedback simulation of vegetation growth and local climate is realized, and a crop stress response mechanism under an extreme climate event is effectively captured.

The invention discloses a determination method, an application method and a related system of a grain yield prediction model, and relates to the field of grain yield prediction, and the determination method comprises the steps: obtaining time-space dynamic data; preprocessing and normalizing climate data, management data and soil data in the spatial-temporal dynamic data to obtain a spatial-temporal data set; respectively inputting the spatio-temporal data set into a plurality of machine learning models to obtain outputs of the plurality of machine learning models; respectively calculating a root-mean-square error and a decision coefficient of each machine learning model based on grain annual output data corresponding to the spatio-temporal data set and the output of each machine learning model; abandoning the machine learning model with the determination coefficient smaller than a preset value to obtain a screened machine learning model; and based on the screened machine learning model and the corresponding root-mean-square error, constructing a weighted average grain yield prediction model. According to the invention, a scientific basis can be provided for grain production under different climate scenes and management strategies.

The invention is suitable for the technical field of agricultural bactericides, and provides application of an echinocandin antifungal drug in prevention and treatment of agricultural diseases. According to the present invention, the two common echinocandin antifungal drugs such as the anidulafungin and the Rezafungin acetate, which are common in the field of medicine, are firstly applied to prevention and control of crop diseases; prevention and control tests are carried out on crop fungal diseases such as sclerotiniose, corn southern leaf blight, tomato gray mold, rice blast and crop anthracnose, and results show that the two drugs can significantly inhibit the growth of pathogenic fungal hyphae, and compared with an existing agricultural commercial bactericide carbendazim, the bactericidal composition shows higher inhibitory activity and has the characteristics of high efficiency and low toxicity. The invention lays a foundation for deep research and application of echinocandin drugs in the agricultural field, has a wide market prospect, effectively improves the crop disease prevention and control level, and promotes grain yield increase and quality safety.

The invention relates to the technical field of grain storage, and discloses a grain impurity treatment device of a static grain dryer, which comprises a dryer body, and the upper surface of the dryer body is fixedly connected with an E-shaped frame; the lower surface of the impurity removing box is fixedly connected with the upper surface of the E-shaped frame, the bottom of the impurity removing box is open, a feeding port is formed in the outer surface of the impurity removing box, a first partition plate and a second partition plate are fixedly connected to the inner wall of the impurity removing box, and the second partition plate is located on the side, away from the feeding port, of the first partition plate. A screen drum is rotationally connected between the first partition plate and the impurity removing box, and center shafts are fixedly connected to the two opposite sides in the impurity removing box. The grain impurity treatment device of the static grain dryer can effectively solve the problems that in the prior art, flowing large-particle impurities easily drive part of grain particles to be jointly discharged from the impurity discharging opening of the screen drum, so that actually available grains are reduced, and the grain yield and the overall income are reduced.

The invention discloses a high-standard farmland construction time sequence optimization method, and relates to the technical field of agricultural information, and the method comprises the steps: superposing a permanent basic farmland distribution diagram layer and a high-standard farmland distribution diagram layer, and recognizing a permanent basic farmland region which is not constructed into a high standard; obtaining multi-source basic data in the region, and representing the grain yield by adopting an LAI average value after S-G filtering; constructing a high-standard farmland construction ecological toughness evaluation index system; the combined weight of each evaluation index is calculated according to the combination of an entropy weight method and a CRITIC method, and a set pair analysis model is established to calculate the farmland ecological toughness; a spatial interaction relationship between grain yield and farmland ecological toughness is obtained based on a bivariate local spatial autocorrelation analysis method, a preferential plot of high-standard farmland construction is identified in combination with a self-organizing mapping neural network and a K-means method, and a construction time sequence arrangement and spatial layout optimization scheme is formed. According to the invention, the problem of high-standard farmland construction priority can be solved.

The invention provides a method for quantifying the influence of a black land cultivated land ecological barrier function on the grain yield, and relates to the technical field of grain yield influence assessment, and the method comprises the steps: obtaining the climate, soil, hydrology and land utilization geospatial data of a target ecological region; determining a black land cultivated land ecological barrier range, and calculating service function values of five types of ecological systems including habitat quality, water source conservation, soil conservation, water quality purification and carbon sequestration storage; generating an ecological barrier function comprehensive value ESI through normalization and equal weight superposition; calculating and normalizing the black land cultivated land grain yield in combination with remote sensing data and a harvest index method; and based on multi-scale window random sampling, fitting a non-linear relationship between ESI and grain yield, and determining an optimal proportion of an ecological barrier grid proportion, a minimum threshold value of an ecological function and a saturation threshold value of a cultivated land ecological function through derivative analysis. The problem of landscape or regional scale quantification is solved, and an accurate basis is provided for black land ecological restoration and grain safety decision making.

The invention discloses a fertilizing method for realizing simultaneous enrichment of iron, zinc and selenium in corn kernels. Relates to the technical field of corn nutrient fertilization. Comprising the following steps: 1) applying a zinc fertilizer and an iron fertilizer; humic acid; organic fertilizer or farmyard manure; a calcium-magnesium-sulfur-silicon fertilizer; spraying fertilizer on leaf surfaces by an unmanned aerial vehicle. According to the method, through reasonable fertilization, namely reasonable matching of large, medium and trace elements (carbon, nitrogen, phosphorus, iron, zinc, selenium and the like), the yield of corn kernels and the simultaneous improvement of iron, zinc and selenium in the kernels are achieved in calcareous calcareous alkaline soil, saline-alkali soil and light soil, and the contradiction between high yield and nutrient quality of the trace elements is solved.

The present invention relates to the technical field of rice yield prediction. Disclosed is a rice yield prediction method based on unmanned aerial vehicle remote sensing image processing. In the method, vegetation indices (VIs), spectral indices, and color indices of rice at different growth stages are collected by an unmanned aerial vehicle, and the rice yield is predicted by using single-date VIs and multi-date VIs based on multispectral (MS) and digital (RGB) images. Both MS and RGB digital sensors on an unmanned aerial vehicle are reliable platforms for rice growth and yield prediction, and it is feasible to estimate the rice yield on the basis of dual-sensor data and temporal accumulation across different growth stages, so that full-growth-stage monitoring of rice can be performed, the influence of spectral indices and color indices at different growth stages on the rice yield can be evaluated, and the pre-harvest grain yield can be predicted in a timely and accurate manner, thereby facilitating rice production management and grain trade.

The present invention relates to the field of general plant biotechnology and gene editing. In particular, the present invention relates to the generation of diallelic mutant forms of the OsCKX2 (LOCOs01g10110) gene in plants and their use in providing increased 20%-35% grain yield and finer grains, stronger stems, early flowering and maturation, complete heading, improved water and nutrient utilization efficiency, improved photosynthesis and enhanced seedling vigor. The invention also relates to a method for generating the diallele mutation form of the gene OsCKX2 (LOCOs01g10110) in a plant.

The invention relates to the technical field of crop planting. The invention provides an accurate fertilization and harvesting method for increasing yield and improving quality of sweet corn by nitrate nitrogen and rhizosphere symbiotic AM fungi. According to the technical scheme, the nitrogen and phosphorus compound fertilizer with the optimized proportion and AM fungi are synergistically used, so that accumulation of biomass of the mycorrhizal sweet corn and accumulation of nitrogen elements, phosphorus elements, soluble sugar content and amino acid content in sweet corn kernels are effectively promoted, and then the yield of the sweet corn and the kernel quality are improved; the utilization rate of nitrogen and the utilization rate of phosphorus are increased by 29.54% and 19.43% respectively by the AM fungus mycorrhizal corn. In addition, the time from planting to harvesting of the sweet corn ranges from 8 weeks to 9 weeks, the protein nutrition of the sweet corn is relatively best in the harvesting period, and the grain yield is relatively highest.

The present application relates to the field of agrochemical adjuvants, and relates to an agrochemical protein adhesion synergist based on a plant-derived protein, and a preparation method therefor and a use thereof. Said synergist comprises the following raw materials in parts by weight: 20-500 parts of a plant-derived protein, 50-450 parts of a protein dispersant, and 20-350 parts of a protein stabilization and protection agent. The product of the present application improves the utilization rate of agrochemicals and reduces problems such as grain yield reduction and environmental pollution caused by the loss of agrochemicals. Moreover, as the protein degrades into amino acids, plant growth can be promoted, and the resistance of plants to abiotic stress is improved, thereby reducing dosage of agrochemicals while enhancing efficacy of agrochemicals.

A method of enhancing grain yield of a Gramineae plant is provided. The method comprises:(a) crossing a recipient plant with a donor plant comprising a sequence variation in a TPR allele, said sequence variation imparting enhanced grain yield; and(b) selecting a progeny plant of said crossing comprising said sequence variation by identifying said variation, said progeny plant being characterized by an improved grain yield relative to said recipient plant. Also provided are plants and processed products resultant of the method.

The invention discloses a water-saving and emission-reducing grass-growing strip-shaped intercropping and interplanting method for a wheat and corn system in a groundwater limited mining area in North China Plain. The method comprises the following steps: firstly, performing strip-shaped simultaneous sowing on wheat and clover, only performing accurate water and fertilizer regulation and control on a wheat strip in a wheat growth period, and interplanting corn in the clover strip in a no-tillage manner when the wheat enters a dough stage; after the crops are harvested, the straw is smashed, covered and returned to the field, the clover naturally overwinter, and the next planting cycle is carried out; by means of the planting method, annual water consumption and carbon and nitrogen footprint can be effectively reduced, annual grain yield stability is maintained, meanwhile, soil enzyme activity and microbial environment are improved, cooperation of water saving, emission reduction, stable yield and soil improvement is achieved, and technical support is provided for agricultural sustainable development of underground water mining limit areas.

This invention relates to the field of agricultural environment and soil fertilizer technology, and in particular to a method for increasing paddy field yield and reducing N2O emissions by regulating the application rate of zero-valent iron. The method includes the following steps: at the early tillering stage of rice, zero-valent iron is mixed with tillering fertilizer and applied to the paddy field soil; the application rate of zero-valent iron is 20-50 mg / kg (dry soil basis). ‑1 The method involves applying booting fertilizer to the paddy soil during the early booting stage of rice, and irrigating throughout the entire rice growth cycle. This invention, by applying an appropriate amount of zero-valent iron in a single application on top of conventional fertilizer application, can synergistically achieve greenhouse gas emission reduction and increased grain yield, providing a feasible path for green production in paddy fields.

The invention discloses application of a corn ZmFKF1a gene in promoting flowering of plants, and belongs to the technical field of plant genetic engineering, the corn ZmFKF1a gene is a ZmFKF1a gene which is based on genetic engineering and is connected with a photoperiod insensitive inbred line HuangZao4 carrier plasmid driven by a ZmUBI promoter; the overexpression ZmFKF1a gene is constructed by connecting with a photoperiod insensitive selfing line HuangZao4 carrier plasmid driven by a ZmUBI promoter, and the overexpression ZmFKF1a gene can promote the corn flowering phase to be advanced and the grain yield to be increased under the condition of natural long sunshine.

The present invention discloses the application of a maize transcription factor ZmERF1a and its coding gene in regulating plant grain yield, belonging to the technical fields of molecular biology and genetic engineering. The present invention screens, through DNA pull down and mass spectrometry cloning, a transcription factor ZmERF1a that regulates maize kernel weight and its coding gene ZmERF1a, the amino acid sequence of which is as shown in SEQ ID NO.2. The present invention verifies that the ZmERF1a protein can bind to the promoter of the ZmNAD gene and regulate the hundred-kernel weight of maize. The transgenic experimental results of the present invention show that in Arabidopsis thaliana plants overexpressing ZmERF1a, the overexpression of the ZmERF1a gene can increase the thousand-kernel weight of grains by 14.8% - 37.4%. The transcription factor ZmERF1a provided by the present invention has broad application prospects and huge economic benefits in regulating maize grain yield.

This application discloses a method, apparatus, equipment, medium, and product for predicting regional crop water productivity, relating to the field of smart agriculture. The method includes inputting historical and future climate data into an ecosystem process model to obtain simulated net primary productivity and simulated evapotranspiration for historical and future times; using a bias mapping method based on the simulated evapotranspiration, actual evapotranspiration, and simulated evapotranspiration for future times to obtain predicted evapotranspiration for future times; training multiple machine learning models based on the simulated net primary productivity, agricultural management data, and grain yield per unit area for historical times to obtain a crop yield prediction model; obtaining the predicted grain yield per unit area for future times based on the crop yield prediction model; and obtaining the regional crop water productivity based on the predicted evapotranspiration and the predicted grain yield per unit area for future times. This application can achieve high-precision, high spatiotemporal resolution, and high-reliability prediction of regional crop water productivity.

The invention discloses a method for producing corn by site-directed base mutation ZmGRF1 The present invention relates to the field of plant genetic engineering and provides a method for increasing corn biomass and / or grain yield, comprising: modifying the wild type shown in SEQ ID No. 1 in the corn genome to improve the biomass and / or grain yield of the corn. ZmGRF1 The nucleotides 1322 and 1323 of the gene are mutated from G to A, thereby increasing the biomass and / or grain yield of corn. The present invention is of great significance for cultivating high-yield corn varieties and providing material accumulation for corn breeding.

The invention provides a regional soil heavy metal water input type pollution risk assessment method and system, and relates to the technical field of soil pollution risk assessment. Aiming at the problem of insufficient accuracy of existing pollution risk assessment, the method comprises the following steps: acquiring a sub-basin boundary, a cadmium-containing wastewater discharge point, cultivated land distribution data, a grain yield, cultivated land irrigation water consumption and a flood-submerged cultivated land area; calculating a cadmium emission hazard index, an irrigation exposure index, a flood exposure index and a vulnerability index according to the acquired data; after standardization processing is conducted on the key indexes, cadmium pollution risk values of the irrigation approaches and the flood approaches of all the sub-basins are calculated; dividing an irrigation exposure type and a flood exposure type according to a set threshold value, and determining a comprehensive risk type by combining the dual-path risk value; a sensitive analysis model is adopted, the key index is used as an input quantity, the double-path risk value is used as an output quantity, and a sampling and statistical method is set to identify a sensitive factor with the maximum influence of the risk value. According to the method, comprehensive and accurate evaluation of the watershed scale pollution risk is realized.

The invention discloses application of ATP-dependent DNA helicase RECG in improvement of agronomic traits of gramineous crops, corn overexpression helicase RECG or enhancement of enzyme activity can improve grain yield and plant biomass, and the application is of great significance to cultivation of new high-yield corn varieties.

The invention discloses a regionalized rice planting density recommendation method based on multi-source data, and relates to the technical field of agricultural production.The method comprises the steps that literature data, meteorological data and soil data are collected, the relation between rice planting density and yield is calculated, clustering analysis is adopted for conducting rice planting ecological region division on a research region, and the rice planting density is recommended; the planting density of the rice is recommended in a targeted mode by combining the meteorological and soil factors of each rice planting ecological area; according to the method, the regional ecological characteristics are recommended in a customized manner, so that the limitation of the prior art in large-range regional planting density prediction is overcome, and the problems that the variety characteristics and the environment interaction effect are not fully integrated, the model precision is low, rice planting ecological region division is not considered and the like in high-yield group prediction in the prior art are solved; actual production can be better guided, and the grain yield can be improved.

The invention relates to a growth regulator for improving the drought resistance of wheat in the booting stage, a preparation method and application, and the growth regulator takes a composition containing spermidine, 2, 4-epibrassinolide and monopotassium phosphate as an active ingredient. According to the growth regulator for improving the drought resistance of wheat in the booting stage, the drought resistance of wheat in the booting stage can be improved, and the drought resistance of wheat in the later growth stage can be greatly improved; moreover, spermidine, 2, 4-epibrassinolide and monopotassium phosphate are specifically combined and proportioned and are applied to improve the drought resistance of wheat at the booting stage for the first time, the three active ingredients have a synergistic effect, the comprehensive drought resistance of wheat can be remarkably improved, so that the grain yield is stabilized, and meanwhile, the composition has the characteristics of safety, high efficiency and environmental protection, and is worthy of popularization and application. The preparation method is simple and easy to implement, and is convenient to popularize and apply.

This invention relates to the field of food security monitoring technology, specifically a method for monitoring and warning of food security yield based on big data analysis. The method includes: collecting multi-source monitoring data such as remote sensing vegetation index time-series data, meteorological observations, soil moisture, crop growth surveys, and historical yield statistics. An improved time-series decomposition algorithm combining crop phenological patterns and interannual cycle characteristics is employed to decompose multiple components of the remote sensing time-series data. Spatiotemporal fusion and feature derivation are performed on farmland environment and growth data to construct a multi-dimensional feature vector set. A yield prediction integration model is used to calculate the predicted grain yield and confidence interval, and combined with yield security thresholds, graded risk warning information is output. Multiple data types are integrated to generate a structured warning report, which is then pushed to a decision support platform, achieving accurate grain yield calculation and standardized risk warning.

The invention provides a grain production risk assessment method and equipment based on climatic years and a storage medium. The method comprises the following steps: acquiring historical data of a specified region, wherein the historical data comprises the yield of specified crops, meteorological data and cultivated land data; performing grain production key climate factor identification based on historical data to obtain a meteorological yield and a meteorological factor influence coefficient, and performing climate year division to obtain a climate year division result; based on the meteorological yield and the division result, the risk degree of the annual specified crops is determined; based on the cultivated land data in the historical data and the risk degree, the suitability grade index of the specified crop in the specified region is determined, the risk degree and the suitability grade index are integrated, an assessment result representing the grain production risk of the specified crop is obtained, and the assessment result comprises the risk degree and the suitability grade index. The influence of annual climate fluctuation on the grain yield is quantified, and the accuracy of grain production risk assessment is improved.

The invention relates to the technical field of image sequence analysis, in particular to a grain yield prediction method based on a multi-source and multi-temporal remote sensing technology, which comprises the following steps: acquiring reflectivity data and texture features of a crop coverage area, identifying abnormal sections and environmental stress, detecting a change rule, analyzing a variable matching relationship and sequencing performance. And analyzing a prediction relationship between the key nodes and the yield, identifying abnormal intervals and overrun nodes, and obtaining a crop growth and environment variable regulation and control strategy table. According to the invention, through integration of multi-source remote sensing data and environment variable analysis, crop growth states and abnormal areas can be accurately identified, agricultural monitoring and decision support are optimized, time response characteristics of crop growth and environment factors are analyzed, limitations of a single data source and a specific area model are overcome, and applicability of the model is improved. The method achieves the optimization of the model performance, guarantees the accuracy of yield prediction, optimizes the production management strategy and environment regulation, and promotes the efficient operation and precise management of agricultural production.

The invention discloses a forage soybean yield measuring method, and belongs to the technical field of crop yield detection, and the method comprises the following steps: S1, obtaining core basic information of a target land parcel, and carrying out homogeneous yield measuring unitization division on the land parcel; s2, dynamically adjusting the side length of the grid according to the planting density, setting center-edge double-region sampling points in a stepped manner according to the area of a homogeneous yield measurement unit, and arranging a sampling frame; s3, respectively collecting morphological parameters and spectral parameters, and measuring grain potential parameters; s4, respectively constructing multiple linear regression models of the fresh grass yield and the grain yield; s5, after the model measurement values of all the homogeneous yield measurement units are corrected, the total yield of the fresh grass and the grains of the target plot is obtained through summarizing; and S6, enabling the core parameter variation coefficient of all sampling points in each homogeneous yield measurement unit to be not higher than 15%, and generating a color graded yield distribution diagram and an Excel report. The technical problems that a traditional yield measuring method is weak in pertinence, high in destructiveness, large in error and low in efficiency are solved.

The invention discloses a composite preparation based on sophorolipid and a PHBV bioactive preparation and a method, and belongs to the field of saline soil improvement. The preparation method comprises the following steps: dissolving the sophorolipid and the PHBV bioactive preparation in water, and uniformly mixing to obtain the compound preparation. Before crops are planted, the compound preparation is irrigated in saline-alkali soil where oil sunflower crops need to be planted; under the synergistic effect of sophorolipid and the PHBV bioactive preparation, the physicochemical properties of the saline-alkali soil can be improved, the growth and development of plants are promoted, and the stress resistance of oil sunflower crops is improved. The compound preparation disclosed by the invention can effectively improve growth indexes (such as plant height, plant diameter, fresh weight, dry weight, leaf number, flower disc diameter and the like) of plants and increase the grain yield at the same time, so that the limitation of limited plant growth and yield improvement in the saline-alkali soil improvement process in the prior art is overcome.

According to the technical scheme, the wide-sowing-width high-efficiency no-tillage planter is mainly composed of a plough leg seed outlet, a plough share seed inlet, a seed guide angle plate, a single-bend forward rotary cutter, a single-bend reverse rotary cutter, a double-bend forward rotary cutter, a double-bend reverse rotary cutter and a using method of the rotary cutters, and is mainly characterized in that transverse swing is added when soil is subjected to rotary tillage through changes of the forward rotary cutter bends and the reverse rotary cutter bends; soil cracks are broken, formation of hardened layers on a tillage face and a plough bottom is reduced to the maximum extent, meanwhile, the sowing width is increased, energy is saved, the working efficiency is improved, and the problems that in the prior art, a rotary cutter is large in camber, multiple in soil rotary tillage working face, high in energy consumption, low in working efficiency and prone to forming the hardened layers on the plough bottom, and the grain yield is reduced are solved. The agricultural grain production capacity of China is improved, and the grain production cost is reduced.

The present invention relates to a combine harvester that cuts grain stalks growing in a field and threshes the grain using a threshing device, and aims to increase the yield of grain by eliminating the loose grains that are discharged outside the machine along with the threshed material. [Solution] In a threshing device 4 in which a threshing cylinder 11 with threshing teeth 16 erected is mounted on an axis inside a threshing chamber 10 of the threshing device 4, the lower outer surface of the threshing cylinder 11 is surrounded by a receiving net 12 in an arc shape, and grains that leak down from the receiving net 12 are received into a sorting chamber 20 for sorting and harvesting, the threshing device 4 is characterized in that an agitator 17 is provided near the end of the threshing cylinder 11 inside the threshing chamber 10, entering and intersecting the rotational trajectory of the tip of the threshing teeth 16 from the receiving net 12 side.

The invention discloses a preparation method of a NiII-containing coordination polymer and research on the inhibition effect of the NiII-containing coordination polymer on soil urease and nitrifying bacteria, and the preparation method comprises the following steps: synthesizing N, N-dimethylformamide by taking pyridine-3-carboxylic acid and 1, 2-ethylenediamine as raw materials; the invention discloses a novel coordination polymer [Ni (1, 4-chdc) (3-dpy) (H2O) 2], which is prepared by the following steps of: synthesizing N, N '-bis (3-pyridinecarboxamide)-1, 2-ethane by using NiCl2. 2H2O, the synthesized N, N'-bis (3-pyridinecarboxamide)-1, 2-ethane and 1, 4-cycloadipic acid through a hydrothermal method, and researching the influence of the novel coordination polymer [Ni (1, 4-chdc) (3-dpy) (H2O) 2] as an inhibitor on soil urease and nitrifying bacteria by analyzing the crystal structure of the novel coordination polymer [Ni (1, 4-chdc) (3-dpy) (H2O) 2]. The research on the compound as an inhibitor reduces the conversion of urea from urea N to ammonium nitrogen and the conversion of ammonium nitrogen to nitrate nitrogen, improves the utilization rate of the fertilizer urea and the stability of the urea, reduces environmental pollution and improves the grain yield. Compared with a traditional inhibitor, the novel NiII coordination polymer serving as a urease and nitrification inhibitor has the advantages of longer half-life period, small toxic and side effects, low preparation cost and more comprehensive functions, the utilization rate of nitrogen fertilizer urea can be greatly increased, the grain yield is increased, and the environmental pollution is reduced.