98 results about "Stem length" patented technology

The invention provides a high-yield cultivation method for planting a precocious upland cotton variety in a precocious cotton area, in order to solve the problem of greatly reduced output caused by the windstorm disaster in a southern Xinjiang precocious cotton area or the precocious and middle-mature varieties after late sowing is performed. Different from the traditional cultivation method for the precocious and middle-mature varieties, the high-yield cultivation method is characterized in that: 1) the sowing time is delayed for 10-25 days; 2) the sowing density is increased by 1000 strainsper mu; 3) topping is performed before and after July 20, the topping time is delayed for 8-12 days, the number of leaved fruit spurs is increased to 1-2 and the stem length is increased to 5-10cm; 4) after topping, the chemical regulating times is changed into two from one, the elongation of the top fruit spurs is boosted, the number of the coped buds and the bud yield are increased; and 5) the pre-frost yield rate is increased from 95% to above 98%. According to the high-yield cultivation method provided by the invention, the output of cotton is not reduced by the after-culture or late-culture, the output of pre-frost lint is slightly increased, the level of the lint is increased and the income of a cotton planter is increased.

The invention discloses a method for controlling interval pumping of an oil well, which comprises the following steps of: generating a pump dynamograph of the oil well according to a ground indicator diagram of the oil well and basic parameters of the oil well, wherein the basic parameters include a water content parameter of the oil well, a gas oil ratio, a viscosity, a stem diameter, a stem length, a pump diameter, a pump depth and the like; and controlling the interval pumping of the oil well according to the pump dynamograph. The invention further discloses a system for controlling the interval pumping of the oil well, which comprises an acquiring module, a ground indicator diagram generation module, a pump dynamograph generation module and an interval pumping control module. With thesystem and the method for controlling the interval pumping of the oil well, the optimal interval extraction starting point and interval extraction time can be analyzed in real time in combination with the oil production law of the oil well, remote intelligent self dynamic interval pumping control of the oil well is implemented, and consequently energy for the oil well is saved, consumption of theoil well is reduced and loss of operating apparatuses is also reduced.

A method is disclosed for evaluating logs to predict structural properties and / or warp tendency of lumber or veneer that might be produced from a given log. The method can be used in a forest stand, sorting yard or merchandiser, on-line in a sawmill, or at other locations along the route from forest to mill. It enables decisions whether a log should be directed to a sawmill for lumber manufacture or for other applications such as timbers, veneer, or pulp chips. Log taper has been found to correlate with both stiffness and warp propensity of lumber cut from a given log. A high amount of taper leads to warped lumber and low stiffness lumber or veneer. The correlation with taper is highest if it is measured over the full stem length of the harvested log, before it is bucked to sawmill size or veneer blocks. Other geometric features of the log, such as sweep or cross section irregularity, can be combined with taper in a multivariate regression equation to increase accuracy of prediction. This can readily be accomplished in a conventional scanner used in a sort yard or sawmill.

The invention pertains to the field of rape breeding and discloses a method for seed selection and identification of a novel dwarf compact type rape adapting to high-density planting and mechanized harvesting. The rape of Variety 5148-2 with apreservation number of CCTCC-P200601 that is bred by Huazhong Agricultural University and yellow-seed rape of DH series YN90-1016 that is synthesized artificially in Canada are taken as seed-parents and crossbred to obtain F1. In inflorescence, the main anthotaxy of an F1 plant and the flower buds with a size ranging from 2.8mm to 3.8mm at the upper branches of the P1 plant are selected, and then chromosome doubling with colchicine and microspore culture are carried out successively to obtain the segregation populations of double haploid. Filed phenotypic characteristic identification are applied for years in various spots to the segregation populations; variant rape materials with five major traits, namely, stem length, branch trait, length of anthotaxy, quantity of silique and growth period differing from those of the common rape and dwarf, compact plant, smallish and acervate branches and main anthotaxy, concentrative florescence and compact pod bearing layers phenotypes are selected to obtain the novel dwarf compact type rape adapting to mechanized harvesting. The invention also discloses a method for molecular identification.

An apparatus and method for declustering cherries, including a plurality of oscillating cutting modules (36), each having a power driven shaft (40) with a plurality of circular blades (42) fixed along its length. The modules further comprise cutting ramps (46) having a tail section (48) extending under the blades, such that the clusters are suspended from their nodes at the moment of cutting. The height of tail sections (48) may be adjusted to accommodate cherry varieties having different stem lengths.

Small sheds are adopted for carrying out seedling cultivation for green Chinese onions in the Spring, high-quality seeds are selected, a seed bed is well maintained, sufficient water and fertilizer are applied, bud forcing treatment is carried out on the seeds, then fine earth with 20-30 times of the weight of the seeds is evenly mixed with the seeds, and the seeds are sown in the middle ten days of the March. Sufficient water and fertilizer are applied in a growing period, weeds in the seed bed are removed, ventilation and cooling are carried out when the temperature in the small sheds reaches 35 DEG C, and the temperature in the small sheds is maintained between 25 DEG C to 35 DEG C. Hardening of seedlings, exercising the seedlings and strong seedling promotion are carried out in the middle ten days of the May. According to investigation and statistics, the average stem diameter in the spring seedling process is 0.9cm, the average plant height is 55cm, the average root length is 10cm, the average number of roots is 29, the average stem length of the green Chinese onions is 3cm to 4cm, the rate of seedlings of the first grade reaches more than 80%, the average yield per mu is 2825 kg after transplantation, the average unit price is one yuan, and the average income per mu is 2825 yuan. The spring seedling cultivation for the green Chinese onions enables the seedling cultivation for the green Chinese onions to develop towards double-season and diversification modes, planting time is short, cost is low, and time and labor are saved. The spring seedling cultivation can provide sufficient green Chinese onion seedlings of high quality, and the industry of the green Chinese onions is made to be developed stably and continuously.

The invention relates to a brassinolide and paclobutrazol compound soybean growth regulator, which comprises the following compositions in percentage by weight: 1-65 percent of active components namely brassinolide and paclobutrazol, and the balance of auxiliaries, wherein the weight ratio of brassinolide to paclobutrazol is 1: 500-1:10,000. In the invention, auxiliaries such as emulsifying agent, solvent, defoaming agent and the like that are commonly used in the pesticide field are adopted to prepare an emulsifiable compound regulator which can be used as a soybean growth regulator for controlling the stem length of soybeans and reducing falling of soybeans. The soybean growth regulator has the advantages of having obvious synergy, achieving intended effect by once application, being capable of effectively controlling the stem length of soybeans and reducing falling of soybeans, wherein the stem length inhibiting rate reaches 13.7-18.7 percent, the falling rate is only one percent, the production of soybeans can be increased by 22.7-29.1 percent, the cost is lowered by 71.07 percent, and the compound soybean growth regulator is safe for the environment.

The invention provides a construction method of agrobacterium rhizogenes-mediated transgenic plants, and relates to the technical field of plant genetic engineering. The method comprises the steps offirstly, constructing agrobacterium rhizogenes with a target gene, enabling sterile seedlings of plants to take roots and then planting; when the stem lengths of the planted sterile seedling are morethan 3cm from the roots, injecting the bacterial liquid of the agrobacterium rhizogenes with the target gene into the stems of the sterile seedlings of the plants; after the transgenic hairy roots ofthe plants grow out at the injected parts of the stems, culturing until the lengths of the transgenic hairy roots are greater than 3cm and the number of roots is increased to 10, removing the non-hairy roots and extending the hairy roots into the soil to obtain the transgenic plants with the hairy roots. Compared with the conventional plant transgenic system, the method provided by the invention can omit the plant re-differentiation step of callus cells and overcome the problems of long period and the like which are caused by using the callus cells for genetic transformation. The method provided by the invention requires simple equipment and easy in mastering of operation technology, thus having a broad development and application prospects.

The invention relates to the field of microbial technology, particularly to a phosphorous-dissolving pseudomonas strain and application thereof. according to the technical scheme, the phosphorous-dissolving pseudomonas strain is preserved in CGMCC (China General Microbiological Culture Collection Center) with a preservation number of CGMCC No. 15915. The phosphorous-dissolving pseudomonas strain is efficient in IAA (indoleacetic acid) secretion to promote growth of crops and increase the biomass of plants, and meanwhile, can grow by taking insoluble phosphates as the phosphorous source and release soluble phosphorous. Besides, the phosphorous-dissolving pseudomonas strain can promote seed germination and improve the root length, stem length, dry weight and wet weight of seedlings, and is applicable to preparing microbial fertilizers.

The invention discloses a garlic root hair and stem cutting device. Garlic which is clamped well moves through a conveying device, and when the garlic goes through a garlic cutting device, a single knife completes fixed-length cutting of stems under pressure of a press plate; when the garlic goes through a garlic root hair cutting device, a milling cutter completes fixed-depth cutting of garlic root hair through a sliding plate moving back and forth. A stepping motor drives a conveying belt and is connected with a spring to drive the sliding plate to move back and forth through a conveying belt clamping device; when a probe contacts with a garlic clamp, motion that the stepping motor drives a conveying belt is converted into stretching motion of the spring, so that the whole sliding plate is ensured not to continue cutting root hair. The stem cutting device can realize fixed-length cutting of garlic stems, so that uniformity requirements on stem length of complete garlic export enterprises are guaranteed.

The invention provides a hypsizygus marmoreus strain and a breeding method thereof. A hybrid strain is obtained by the polyspore hybridization of seafood mushroom and crab mushroom, and the hypsizygusmarmoreus variety Hypsizygus marmoreus No.1 is obtained by the polyspore selfing of the hybrid strain. According to the invention, the Hypsizygus marmoreus No.1 is obtained through hybridization andselfing breeding. The growth speed of the Hypsizygus marmoreus No.1 is faster than that of the parent strain, the bag filling time is 5 days earlier than that of the original strain of the seafood mushroom, the growth period is 10 days earlier than that of the parent seafood mushroom, the Hypsizygus marmoreus No.1 is bred and harvested 10 days earlier, the average mushroom stem length is 14.4 cm,the average mushroom cover diameter is 1.4 cm, the average single-bottle yield is 330.5g, the average biological efficiency is 110.1%, the Hypsizygus marmoreus No.1 is superior to the parent originalstrain of the seafood mushroom and the crab mushroom, and the economic benefit is improved.

The invention belongs to the technical field of grafting, in particular relates to a method of grafting macadamia nut. The method comprises the steps of S1, seed treatment, S2, stock culture, S3, scion cultivation, S4, grafting, and S5, management after grafting. The macadamia seeds are treated at a low temperature before sowing, when the seeds germinate and grow to 0.3-0.5 centimeter in stem length, they are used as the rootstock, the non-lignified branches produced by the grown grafted female parent are used as the grafted rootstock, in the grafting process, the rootstock and the scion are treated using a plant growth regulator, after the grafting process, the temperature and humidity are controlled, and fertilizer is applied, the grafting survival rate of the macadamia nuts is improved; when the seeds germinate and grow to 0.3-0. 5 centimeter in stem length, they are used as the rootstock, then grafted, and when they survive after the grafting process, the seedling rearing step is directly conducted, and the time used for seedling rearing is shortened.

The invention belongs to the technical field of plant genetic engineering, and particularly relates to a transcription factor gene Osspl10 of oryza sativa and an application of the transcription factor gene Osspl10. The invention discloses a nucleotide sequence of the gene Osspl10 of oryza sativa and a nucleotide sequence of an SPL family transcription factor coded with the gene Ospl10. A knockoutmutant oryza sativa plant with gene Osspl10 frameshift mutation and loss mutation shows notable reduction of stem length, tiller number and panicle type size. These results indicate that the gene Osspl10 can notably influence yield and correlated character of the oryza sativa, and can have important value in the field of oryza sativa character improvement.

The invention relates to a flower cultivation method, in particular to a cultivation method for dwarfing potted zinnia elegans, and belongs to the technical field of plant cultivation. An alkaline phosphate fertilizer is added to regulate the PH value of a matrix, promote root growth and improve the uniformity of emerged seedlings while the seedling cultivation matrix is disinfected; the seed soaking treatment is performed to prevent seed-borne diseases before sowing, a sunshade is set up on a greenhouse, and the temperature is controlled by adjusting the illumination time; after the seedlings are uniformized, water is controlled and multi-effect triazole is sprayed to prevent seedlings with high stems from growing; after topping in a seedling stage, branch growing is promoted through watering and additional phosphate fertilizer application; during potting, nutrient soil is adopted to increase phosphorus and boron, hormone is sprayed, a phosphorus potassium fertilizer is additionally applied, the stem length is controlled in a secondary topping mode, the bloom number is increased, and the ornamental effect and economic benefit are improved.

The invention provides a method for cutting and propagating creeping stems of primula pseudodenticulata pax view. The method comprises the following steps of: cutting the creeping stems picked from the primula pseudodenticulata pax view plant into 1 / 3 leaves, cutting the young seedlings with the stem length of 5 to 6cm into the matrix with the thickness of 8 to 10cm and the following mass ratio: garden soil: humus soil: perlite is equal to 1:1 to 2:1 to 2, the cutting depth is controlled to 3 to 4cm, the cutting density is better to non-overlap the leaves of the cutting young seedlings, the matrix is watered thoroughly after cottage, plastic films and sunshade screens are used for covering, management after cottage is carried out according to the conventional manner, and the hardening offof the seedlings can be carried out after 20 to 25 days. The method not only has easy seedling cutting and large amount, but also has easy cuttage, fast propagating speed, obtains strong hardened-offseedlings with strong insect prevention and disease resistance, has the survival rate of 60 to 70 percent after transplantation, is beneficial to industrial development of the primula pseudodenticulata pax view and has wide market prospect.

The invention discloses a baking method for tobacco leaves with small stems. The baking method comprises the steps: cutting and harvesting of leaves with stems, rod weaving, tobacco loading, baking,moisture regaining and grading, in the step of cutting and harvesting of leaves with stems, each tobacco leaf with the stem is cut off from top to bottom, and the small stem with the length of 3-4cm is reserved in each tobacco leaf; in the rod weaving step, classified rod weaving is carried out according to maturity requirements, and leaves with the same maturity are sequentially and tightly wovenon a tobacco rod in a left-right alternating mode; and compared with a semi-chopped plant baking process, the baking step can shorten the temperature stabilizing time. Compared with a semi-chopped tobacco plant baking method proposed by the inventor for the first time, the stem length is reduced, meanwhile, the stem sectional area is increased, and the stem dehydration speed is higher. New balance is established on the basis of tobacco material basis and temperature stabilizing time, on the premise of guaranteeing tobacco quality, the baking method can save more energy and is more beneficialto environmental protection work, each curing barn can save more than 50 kg of coal and more than 5 kilowatts of electricity in each time of flue-cured tobacco baking, material investment of tobacco growers is reduced, and income of the tobacco growers is improved.

The invention provides a stem object analysis system and a stem object analysis method. A long-stem and short-stem analysis system is mainly used for analyzing stem objects and comprises photographing equipment and analysis equipment, wherein the photographing equipment is used for acquiring and outputting an image of stem samples to be detected, and the analysis equipment is connected with the photographing equipment and is used for receiving the image of the stem samples to be detected output by the photographing equipment, then identifying and calculating stem quantity information of the stem samples to be detected and stem length information showed in the image by a processing method provided by software in the analysis equipment and calculating length proportion information of the stems in stem samples to be detected according to the stem quantity information and the stem length information showed in the image. Furthermore, according to a long-stem and short-stem analysis method, the problems of low efficiency and high dependency on workers in a stem object detection process in the prior art are completely solved.

The invention relates to a method for rapidly propagating sugarcane tissue culture seedlings with spermine. The method comprises the following steps: using sugarcane immature leaf slices as explants, vaccinating the explants to an improved MS solid medium of MS+Spm.1.5 mg . L<-1>-3.0mg . L<-1>, regulating the pH to be 5.8-6.0, and performing continuous culture for 10 d-25 d to induce and obtain sugarcane callus tissue agglomerates; retransferring the agglomerates to the same fresh culture medium for subsequent culturing for 15 d, and then separating and cutting obtained callus tissues into small blocks to be revaccinated to the same fresh culture medium; performing subsequent culture for 20d -30d, transferring regeneration seedlings to the same fresh culture medium to be cultured for 20d so as to obtain test-tube seedlings of which the stem length is 5-6cm and the root seedlings are complete. According to the invention, only one culture medium is used from the starting of explant culture to the generation of the complete regenerated plantlets, so that the production process for the sugarcane tissue culture seedlings is obviously simplified, besides, the toxic action of 2,4-D induction callus tissues is removed, and the cost of the used spermine is low, so that the method is more favorable for popularization.

The invention discloses a cultivation method for boosting tropical and subtropical fruit trees to grow quickly, which comprises the following steps: (1) choosing a potting fruit tree seedling with the stem length of 85-95cm, transplanting the fruit tree seedling to a cultivation device at 10 a.m. to 11 a.m. every day, placing the cultivation device under natural light illumination or lamp tube illumination while applying CO2 into the cultivation device; (2) after transplanting the fruit tree seedling to the cultivation device, applying auximone to the fruit tree seedling every other two days; (3) applying a nutrient solution to the fruit tree seedling once per week and controlling the ph value of soil from 6 to 7; and (4) after the fruit tree seedling grows to a young plant by using the cultivation method, transplanting the young plant to an orchard. By using the method provided by the invention, the pullulating speed of the fruit tree seedling can be reduced, the growing speed of stem leaf can be increased and the growth of the fruit tree seedling is greatly boosted.

The invention discloses a method for cultivating cut flower glossy ganoderma. The method comprises the following steps of: culturing a stock culture, a stock culture and cultivated species of a ganoderma lucidum variety; loading a compost into a polypropylene cultivating bag, and sterilizing under a normal pressure or a high pressure; opening the mouth of the bag in a disinfected sterile room, inoculating the glossy ganoderma cultures, tightening the mouth of the bag, and placing into a culture room for culturing; after the bag is full of growing hyphae and the hyphae feel hard with hands, culturing glossy ganoderma outside; and culturing a fruiting body including performing emerging glossy ganoderma management, culturing of prosthecae and glossy ganoderma slices, and grafting of the prosthecae, coating a film on a pileus ventral face till the thickness and the hardness increase, and performing post-treatment on the cultivated cut flower glossy ganoderma to obtain the cut flower glossy ganoderma. The cultivated cut flower glossy ganoderma serving as fresh cut flowers or dry arranged flowers can be inserted into a flower vessel independently, and can be used together with other cut flowers. The stem length of the glossy ganoderma is 30-50 centimeters, glossy ganoderma stem and glossy ganoderma slices are red and bright, and the ventral face of the glossy ganoderma is free from tubes ejecting spores, and the cut flower glossy ganoderma can be soaked into water or stored for a long time. The treated cut flower glossy ganoderma is hard on the surface, is attractive in color and luster, and can be stored for a long time.

The invention relates to the field of plant nutrient fluid, in particularly to beautiful Maranta arundinacea nutrient fluid which comprises water solution (mg / L) containing the following compositions according proportions: 590 to 945 portions of Ca(NO3)2, 253 to 809 portions of KNO3, 68 to 153 portions of KH2PO4 and 347 to 493 portions of MgSO4; and comprises microelements (mg / L): Na2Fe-EDTA20, 2.86 portions of H3BO3, 2.13 portions of MnSO4 question mark 4H2O, 0.22 portion of ZnSO4 question mark 7H2O, 0.08 portion of CuSO4 question mark 5H2O and 0.02 portion of (NH4)6Mo7O24 question mark 4H2O. After using the nutrient fluid formulation, the stem length of a beautiful Maranta arundinacea plant is lengthened to 42.7cm from 20.1cm, the number of leaves is increased to 16 leaves from 8 leaves, and the leaf area is improved to 300cm<2> from 150cm<2>, thus greatly improving the quality.

The invention discloses a method and a system for predicting the aboveground biomass of woody plants. The method firstly obtains input vectors (stem length, leaf number and root number of woody plants) and output vectors (fresh weight of stem and leaf and dry weight of stem and leaf of woody plants) of the BP neural network; constructing a BP neural network model for predicting aboveground biomassaccording to the input vector and the output vector; then the BP neural network model is trained in cycles according to several training samples, and the trained BP neural network model is generated,which can be directly used to predict the aboveground biomass of woody plants (fresh weight and dry weight of stem and leaf). The trained BP neural network model selects the phenotypic characteristics of woody plants (stem length, leaf number and root number) as independent variables, thus reducing the complexity and acquisition time of sample data acquisition, and eliminating the need of consuming a large amount of manpower and material resources; because of the close relationship between phenotypic characteristics and aboveground biomass, the prediction results have high accuracy.

The invention relates to the technical field of plant growing, in particular to the field of plant nutrient fluid. The invention relates to green apple Maranta arundinacea nutrient fluid which comprises water solution (mg / L) containing the following compositions according to proportions: 478 to 649 portions of Ca(NO3)2, 303 to 455 portions of KNO3, 77 to 136 portions of KH2PO4 and148 to 257 portions of MgSO4; and microelements (mg / L): Na2Fe-EDTA20, 2.86 portions of H3BO3, 2.13 portions of MnSO4 question mark 4H2O, 0.22 portion of ZnSO4 question mark 7H2O, 0.08 portion of CuSO4 question mark 5H2O and 0.02 portion of (NH4) 6Mo7O24 question mark 4H2O. By utilizing the nutrient fluid formulation, the stem length of the a green apple Maranta arundinacea plant is lengthed to 70.1cm from 40.3cm, the number of leaves is increased to 16 leaves from 8 leaves and the leaf area is improved to 688cm<2> from 300cm<2>.

The invention relates to a Nandina domestica tissue culture and rapid propagation method based on LED (light-emitting diode) light sources, and belongs to the technical field of propagation. The method is characterized in that the LED light sources with different light qualities are adopted for treatment in stages step by step, single-color green is firstly used as a Nandina domestica tissue culture light source to increase stem lengths and spacing between the stems of the Nandina domestica, then propagation is performed by adopting a stem propagation method, and a fluorescent lamp is used as a light source for stem culture. Compared with the prior art, the Nandina domestica tissue culture and rapid propagation method has the advantages that the Nandina domestica is propagated to 7-8 times, the growth period is shortened to 30-40 days, the situation that the Nandina domestica tissue culture growth cycle is long and the propagation rate is low is solved, the production cost is lowered, the propagation speed of Nandina domestica and the quality of seedlings are greatly increased, and a new method is provided for increasing the propagation speed of the Nandina domestica so as to provide guarantee for industrialization development of the Nandina domestica.

The invention discloses a prawn and grass symbiotic culture method. The prawn and grass symbiotic culture method comprises the following steps that S1, a 6 x 3 x 3 natural pond is built, water is dissolved with quicklime, the quicklime is uniformly sprayed to disinfect, the whole pond is disinfected with niclosamide 340 after 10 days, disinfecting is conducted for 5 days, a water inlet valve is arranged, aquatic plants with stem length of more than 10cm is selected, the aquatic plants is planted on a floating mat, continuously culturing is conducted for 3-4 days, and prawn seedlings are placed; and S2, dissolved oxygen content, ammonia content and nitrogen content of water are monitored, and the number of prawns and the aquatic plants and shelling condition, exercise amount and food intake of the prawns are observed by using an underwater camera, a reinforcement learning algorithm is adopted, and according to the dissolved oxygen content, the ammonia content and the nitrogen content of the water and the number of the prawns and the aquatic plants, the putting amount and the illumination degree of drugs or fertilizer and water grass culture products for inhibiting protists and oxygenates are added. According to the prawn and grass symbiotic culture method, a deep learning model and a reinforcement learning model are used for automatic dynamic adjustment, macroscopic regulation and control and real-time adjustment are achieved, manual control is not needed, and aquaculture achievement of the prawns and the aquatic plants can be greatly improved.

Certain aspects of the present disclosure relate to upright heading iceberg lettuce plants including a space between the base of the head and the top of the ground, wherein the space includes an increased length of core outside of the processing material of the head (i.e., external stem). The increased external stem lengths of the upright heading iceberg lettuce plants of the present disclosure make them suitable for machine harvesting. Other aspects of the present disclosure relate to methods of generating and selecting upright heading iceberg lettuce plants. New upright heading iceberg lettuce varieties designated ‘E01E.70111’ Lot A, ‘E01E.70111’ Lot B, ‘E01E.70168’ Lot A, and ‘E01E.70168’ Lot B are described.

The invention relates to the technical field of vegetable planting, and discloses a high-yield ecological planting method of amaranth. The method comprises the following steps that 1, home-made organic fertilizer is prepared, toxic and harmful substances are eliminated after treatment is conducted on the fertilizer, rape seed cake, plant ash, shell powder and multiple compound bacteria are added into the fertilizer, so that the fertilizer has effects of root reducing, disinfection and heavy metal degradation, and the absorptivity of nutrient elements such as nitrogen, phosphorus and potassium of crops is effectively improved; 2, red soil with a thickness of 2-3 centimeters is laid on a fertilized garden plot, the iron content is rich, the soil is acidic, so that enrichment of iron of the amaranth is promoted, the activity of enzymes is improved, photosynthesis is stronger, and the content of amaranthin is improved; 3, after an amaranth seedling comes into 3 to 4 true leaves, the leaves are sprayed with leaf fertilizer, so that accumulation of nitrate and nitrite of the leaves is reduced, growth of the amaranth seedling is accelerated, the stem length and diameter are higher than average, and the content of amino acid is improved.