53results about How to "Meet absorption requirements" patented technology

The invention provides a special organic-inorganic mixed fertilizer for grapes, and a preparation method of the special organic-inorganic mixed fertilizer for grapes, belonging to the field of special fertilizer for plants. The mixed fertilizer comprises the following substances in parts by weight: 350-400 parts of organic fertilizer, 50-70 parts of soil fertility intensifier, 80-120 parts of monoammonium phosphate, 160-200 parts of urea, 6-10 parts of ammonium nitrate, 10-30 parts of potassium sulfate, 3-4 parts of carboxymethylcellulose, 0.3-0.5 part of boric acid, 0.5-0.7 part of cartap, and 1-3 parts of chlorothalonil. The special organic-inorganic mixed fertilizer for grapes is formed by compounding different raw materials according to absorption rules of grapes; and with the adoption of the special organic-inorganic mixed fertilizer for grapes, output can be increased and the quality of grapes is improved, damage to roots of grapes due to multiple fertilizer application is avoided, and the fertilizer efficiency is prolonged.

The invention relates to a special organic fertilizer for cultivating herbaceous organic fruits and a preparation method thereof. The special organic fertilizer is prepared by mixing large ginger plants as major raw materials with weathered coal and cake residues and fermenting in the presence of microbial fermenting agents. The special organic fertilizer has the advantages of high nutrient content, reasonable proportioning and yield and income increasing and provides a new raw material resource for organic fertilizer production.

The invention relates to a preparation method for controlled-release fertilizer special for mechanically applied rice. The preparation method comprises the following steps: performing double-layer coating by using high tower pelleting compound fertilizer as core fertilizer to obtain the corresponding double-layer coating controlled-release fertilizer I, double-layer coating controlled-release fertilizer II and double-layer coating controlled-release fertilizer III, wherein the bottom layer urea coating accounts for 4 to 6 weight percent of the core fertilizer, and the outer layer film coating agent accounts for 2 weight percent, 4 weight percent and 6 weight percent of the urea coated fertilizer respectively based on the total weight of the reclaimed polyethylene film resin and the reclaimed polystyrene foam resin; and mixing the double-layer coating controlled-release fertilizer I, the double-layer coating controlled-release fertilizer II and the double-layer coating controlled-release fertilizer III according to the mass ratio of 1:(1-3):(1-2) to obtain the controlled-release fertilizer special for mechanically applied rice. The controlled-release fertilizer special for mechanically applied rice meets the absorption requirements of the rice on nitrogen, phosphorus and potassium nutrients in the growth stage, is difficult to crush and is suitable for mechanical fertilizer application.

The invention relates to a special controlled release fertilizer for Chinese cabbages and a preparation method thereof. The invention is compounded by compositions of 4 percent of thermoplastic resin coated potassium nitrate, sulphur coated compound fertilizer, 4 percent of thermoplastic resin coated carbamide, sulphur coated carbamide, diammonium phosphate, etc. The special controlled release fertilizer for the Chinese cabbages of the invention is served as a base fertilizer to be applied once before sowing and is unnecessary to do dressing, thus acquiring relatively good yield-increasing effect, improving the utilization ratio of the fertilizer and saving labor and time.

Disclosed is a broadband wave-absorbing metamaterial in a microwave frequency band. The wave-absorbing metamaterial is composed of a metal thin plate or film, a dielectric layer substrate and a conductive unit located on the outer surface of the dielectric layer, wherein the conductive unit located on the surface of the dielectric layer is composed of four concentric square rings. By reasonably designing the geometric parameters and the surface resistance parameters of the conductive unit structure, the broadband wave-absorbing metamaterial can achieve broadband electromagnetic wave absorption. The broadband wave-absorbing metamaterial is simple in structure, ultra-thin and small in size, and can be mounted on the surface of a target object, and has certain application potential in the field of national defense and civilian use.

The invention relates to a special controlled-release fertilizer used for jujube trees and a manufacturing method thereof. The special fertilizer is made by compounding 5 per cent thermoplastic resin-coated potassium nitrate, 5 per cent thermoplastic resin-coated ammonium phosphate, 4 per cent epoxy resin-coated compound fertilizer, 4 per cent thermoplastic resin-coated urea, diammonium phosphate, etc. The special controlled-release fertilizer used for jujube trees of the invention is manured once before the germination of jujube trees and the dressing is avoided. the invention has a good effect on increasing yield and can improve the utilization ratio of the fertilizer and save labor.

The invention relates to a biological organic fertilizer special for pollution-free medlar and a preparation method thereof. The biological organic fertilizer comprises the following raw materials in parts by mass: 20-30 parts of pepper seed oil slag, 15-25 parts of soya-bean oil slag, 5-20 parts of xylitol slag, 25-35 parts of peanut straw, 5-15 parts of decomposed coal and 1-3 parts of microorganism bactericide. The biological organic fertilizer is prepared by using a batch-feeding fermentation and ageing method. The fertilizing applying method is as follows: 5-8 fertilizer applying pits are dug on the circumference which is 15-25 centimeters far away from a tree trunk before the medlar sprouts in spring, and the biological organic fertilizer is mixed with soil and then the mixture is applied to the pits; and earthing and watering are carried out. According to the invention, the biological organic fertilizer special for the medlar has high nutrition content, and the supply of the nutrition meets a medlar absorption law, thus the quality of the medlar can be improved by using the biological organic fertilizer.

The invention relates to a controlled release fertilizer special for sulphur -plus-resin coated eggplant and the preparation method thereof, which is prepared with 3 percent of sulphur-plus-resin coated ammonium phosphate, 4 percent of sulphur-plus-resin coated potassium nitrate, 6 percent of sulphur-plus-resin coated potassium nitrate, sulphur-plus-resin coated urea of different coating thicknesses, potassium sulfate compound fertilizer, etc. , compound preparations. The controlled release fertilizer special for sulphur-plus-resin coated eggplant is adopted once applied fertilizer before the eggplant is transplanted, thereby being beneficial to the absorption, enhancing fertilization effect and saving manpower and efforts. The controlled release fertilizer special for sulphur-plus-resin coated eggplant can meet the requirement for nitrogen, phosphor and potassium by eggplant in the annual growth period. The nutrient is released slowly so as to reduce the fertilizer loss and be beneficial to a high yield and yield increase of eggplants.

The invention provides a broadband terahertz wave absorber of three dart-shaped graphene. The wave absorber is composed of a plurality of wave absorbing units, and the main structure of the wave absorber comprises a bottom metal plate (1), a silicon dioxide dielectric layer (2) and a three-dart-shaped graphene layer (3). The broadband wave absorber with good absorption performance on terahertz waves is formed through interaction between the multiple layers of graphene and the dielectric layer, voltage can be applied to the wave absorber to change Fermi level of the graphene layer, and absorption frequency adjustability is realized. The broadband terahertz wave absorber has the advantages of insensitive polarization, good absorption effect and the like, the bandwidth with the absorption efficiency of more than 90% reaches about 2.2 THz, and the application prospect is very wide.

The invention discloses a special fermentation fertilizer for corn, and a preparation method thereof. The special fermentation fertilizer for corn is prepared from the following raw materials by weight: 65-75 parts of urea, 35-45 parts of monoammonium phosphate, 45-55 parts of potassium chloride, 10-15 parts of zinc sulfate, 30-450 parts of cattle manure, 200-300 parts of wheat bran, 65-75 parts of lignite, 50-65 parts of calcium nitrate, 20-25 parts of magnesium sulfate, 100-120 parts of oxalis triangularis purpurea, 50-60 parts of rotted sesame cake and 6-8 parts of a soil activator. The fertilizer provided by the invention fits absorption requirements of the corn for nutrients such as nitrogen, phosphor, potassium and zinc, and has long effect duration. A soil conditioner provided by the invention comprises a jade component containing a lot of microelements which are beneficial to human body and are beneficial to the human body through crop absorption and conversion of food chains. Meanwhile, the soil conditioner comprises an absorption component which can effectively absorb and solidify toxic heavy metal elements in the soil, reduce absorption of the heavy metal elements by the crop and increase crop output.

The invention relates to a preparation method of a special disposable mechanically-applied fertilizer for corn. According to the invention, urea, monoammonium phosphate, potassium chloride and zinc sulfate are compounded, a high-tower granulated compound fertilizer is used as the core fertilizer, and double film layers are coated, wherein the inner layer film is a urea film and used for improving the surface characteristic of the fertilizer granules, and the outer layer film is a thermoplastic resin coating and a thermosetting coating and is used for controlling the release of the nutrients. The special mechanically-applied fertilizer for corn has more smooth and harder surface, and is suitable for mechanical application. The fertilizer satisfies the requirements of corn for absorbing nitrogen, phosphorus, potassium, zinc and other nutrients; and the large-scale field test proves that the fertilizer has favorable yield increase effect.

The invention relates to a broadband light metamaterial wave-absorbing structure and preparation and application thereof. A structure unit of the metamaterial is a mosquito-repellent incense-shaped hollow pattern with the size being 1 to 3 cm, and the structural unit is distributed in a two-dimensional array of 5*5, 8*8 and 14*14 on a substrate of 180*180 mm. A microwave absorbing material is formed by mixing an absorbent and paraffin according to a certain mass fraction and is filled into a hollow gap of an FR4 or polytetrafluoroethylene substrate with the metamaterial. The metamaterial wave-absorbing structure has a remarkable wide frequency-light microwave absorption effect, wherein the effective bandwidth smaller than -10 dB is 3.5 to 16.8 GHz within the frequency range of 1 to 40 GHz;the surface density is 0.081 to 0.932 kilogram per square meter and the thickness is 0.5 to 2 mm. The structure is novel in design idea and has a broadband-light wave-absorbing characteristic, a preparation process is simple, raw materials are cheap and easy to obtain, the cost is low, and the structure is easy to apply and popularize, and furthermore, the obtained metamaterial has wide application prospect in the fields such as a microwave stealth technology, antenna, security check, thermal radiation detection, thermal radiation imaging, nondestructive detection and the like.

The invention discloses a special controlled-release fertilizer for sulphur resin coated chestnut and a preparation method thereof. The special controlled-release fertilizer for sulphur resin coated chestnut is prepared with 4 percent sulphur resin coated compound fertilizer, 3 percent sulphur resin coated compound fertilizer, 3 percent sulphur resin coated urea, 5 percent sulphur resin coated potassium sulphate compound fertilizer, etc. The special controlled-release fertilizer for sulphur resin coated chestnut is applied in one go before the budding in spring, thereby reducing the harm of fertilizations to chestnut roots. The special controlled-release fertilizer for sulphur resin coated chestnut can meet the demand for nitrogen, phosphor, and potassium by chestnut in the annual growth period, thereby increasing the production effectively.

The invention relates to a special controlled release fertilizer for chrysanthemum and a preparing method thereof. The fertilizer is obtained by compounding modified epoxy resin coated urea with different coating amount, modified epoxy resin coated ammonium phosphate, modified epoxy resin coated potassium nitrate, potassium chloride compound fertilizers, etc. The special controlled release fertilizer for chrysanthemum is applied during transplantation, has advantages of saving labor and power, improving fertilizer availability ratio, satisfying request of nitrogen, phosphorus and kalium during different growth periods, applying nitrogenous fertilizer stably, and avoiding watershoots of chrysanthemum.

The present invention relates to a preparation and an application of a chiral microwave absorbing metamaterial. The structural unit of the material is of a chiral helical structure and the helixes with different outer diameters are coaxially nested perpendicular to a substrate and distributed in a two-dimensional array. The preparation method of the material is that the chiral helical structure isused for periodic structural units which are coaxially nested perpendicular to the substrate and distributed in the two-dimensional array so that the microwave absorbing metamaterial with different periods are constructed. The material has a remarkable strong absorption-broadband-lightweight microwave absorption effect; the preparation process is simple; the raw materials are low-cost and easilyavailable; the performance is easy to adjust; and the material has broad application prospects, for example, it can be applied to the military field for stealth of fixed military equipment, a buildingand a tank and applied to the civilian fields such as an anechoic chamber, electromagnetic compatibility and electromagnetic pollution protection.