36results about How to "Reduce irrigation water" patented technology

The invention discloses an earth surface planting desert reforming technology, which aims to provide a technology which can improve the soil texture of the desert, prevent and fix sands, and gradually reform a desertified land into a land with good-quality soil. The invention has the technical scheme that the technology is implemented at the edge part of the desert area to be reformed, the surface layer of sandy soil is cleared up, the lower bottom layer sand is appropriately added with water for tamping, a clay layer with the thickness of 0.15 m is filled on the bottom layer sandy soil, a planting soil layer with the thickness of 1.0 m is filled on the clay layer, plants are planted on the planting soil layer, and a mulching film is paved or a greenhouse is constructed on the earth surface so as to reduce quick water evaporation.

The invention discloses a paddy rice water and fertilizer regulation and control technology, namely an optimized fertilization and water-saving irrigation technology. The key points of the technology comprise: (1) 120 kg.hm<-2> of pure N, 60 kg.hm<-2> of P2O5 and 120 kg.hm<-2> of K2O are applied to quarterly paddy rice; and (2) surface water level of -3-3 cm is kept during paddy rice planting, apart from field drying period. By using the technology, the paddy rice yield and the nutrient absorption are equivalent to those of the conventional water and fertilizer management method of rice farmers; but total nitrogen loss of 11.5 kg.hm<-2>.a<-1> and total phosphorous loss of 0.2 kg.hm<-2>.a<->1 of paddy field surface runoff can be averagely reduced respectively, the reduction ratios are 29.8 percent and 37.1 percent; meanwhile, irrigation water can be saved by 900.5 m<3>.hm<-2>.a<-1>, so that better economic benefit and environmental benefit are achieved.

The invention discloses an effluent recyclable type ecological pond purification system, comprising an ecological pond, wherein the ecological pond is provided with a water inlet and a water outlet, the water outlet of the ecological pond is connected with a water inlet of a farmland by virtue of a back-irrigation ditch, the farmland is provided with a water outlet, the water outlet of the farmland is connected with the water inlet of the ecological pond by virtue of a first drainage ditch, the water inlet of the ecological pond is provided with a first inlet check gate, the water outlet of the ecological pond is provided with a water pump and an automatic water quality monitoring instrument, and the water outlet of the ecological pond is connected with a second drainage ditch which is provided with an outlet check gate; the water inlet of the farmland is connected with a farmland irrigation ditch which is provided with a third inlet check valve; and one end, connected with the farmland, of the back-irrigation ditch is provided with a second inlet check valve. The system disclosed by the invention is less in investment, good in treatment effect, high in ecological benefit and convenient in maintenance management, and is applicable to a sewage cycling treatment recycling system.

The invention discloses a chequered field drainage control and farmland percolation combined interception and removal system for runoff nitrogen and phosphorus of a paddy field. The chequered field drainage control and farmland percolation combined interception and removal system comprises a ridge, an adjustable foldable overflow weir, a percolation tank, a ceramsite percolation layer, a percolation protection slope, an underground horizontal percolation body, straw vertical shafts and a water drainage channel; the ridge is located at the periphery of a chequered field; the adjustable foldable overflow weir is arranged between the ridge and the water drainage channel; the percolation tank is located at a water outlet of the adjustable foldable overflow weir and the ceramsite percolation layer is arranged in the tank; the percolation tank is connected with the macromolecular fiber mesh percolation protection slope; the underground horizontal percolation body is arranged below a plough pan and is formed by covering water-permeable geotextile and crop straw percolation materials on corrugated plastic water drainage underground pipes; deep-layer straw vertical shafts are arranged above the underground pipes and are connected with the underground pipes; shallow-layer straw vertical shafts are arranged between the underground pipes. The invention further discloses an application method of the system. By tightly combining farmland ground surface hydrology regulation and storage and underground percolation with water drainage control, farmland ground surface and underground runoff nitrogen and phosphorus can be comprehensively and efficiently intercepted and removed and the removing rate of pollutants exceeds 70 percent.

The invention discloses an irrigation method for reducing the heavy metal content of paddy rice based on soil water potential indexes. During the tillering stage and milk-ripe stage of the growing period of the paddy rice, the soil water potential of a plowing layer of a paddy field serves as a threshold standard for irrigation; in the secondary growing period, irrigation is conducted when the soil water potential of the plowing layer is reduced to -15 KPa and stopped when the soil water potential rises to 0 KPa; the flooded state of the surface of the paddy field is kept in other growing periods of the paddy rice. Compared with other conventional irrigation methods, through the adoption of the irrigation method for reducing the heavy metal content of the paddy rice based on the soil water potential indexes, the contents of heavy metals Cd, Pb, Hg and Cr in the paddy rice can be reduced by 44.7%, 20.0%, 26.7% and 12.0% respectively, the yield of the paddy rice can be increased by 5.93%, the water amount for irrigation is reduced by 40.5%, and the utilization efficiency of water is increased by 78.1%; the irrigation method is simple to operate, low in usage cost and suitable for producing paddy rice products with low heavy metal contents on vast paddy fields polluted by heavy metal at light and medium degrees.

The invention relates to a one-empty-in-two-ridge corn planting method. The method comprises the following steps: (1) preparing land; (2) selecting seeds; (3) performing coating; (4) sowing according to a one-empty-in-two-ridge method; (5) applying fertilizer, using BB fertilizer or slow/controlled-release fertilizer according to a detection result; (6) irrigating; (7) performing field management; (8) harvesting. Compared with the prior art, the beneficial effects of the method are that the method is characterized by simple, scientific, and rational, and the method effectively uses an empty ridge method to realize a marginal effect, so as to increase field ventilation and light penetrating amount and improve growing environment of corns, the method uses a high photosynthetic efficiency principle to realize a planting mode of ridges are border rows and plants are land, thereby improving utilization rate of illumination and accumulated temperature; since fertilizing amount is concentrated, being beneficial for corns to fully absorb intensively, thereby improving utilization rate of fertilizer, preventing problems of excessive or insufficient fertilization, improving corn yield and cultivated land quality, and the method has wide promotional value.

The invention discloses an ecological irrigation method for combining rainfall regime with physiological water requirement of rice. The ecological irrigation method comprises the following steps of: firstly, after rice is sown and gets through the seedling culture period of 2-3 weeks, transplanting the seedlings to flat parcel of rice field and controlling the water depth of the field surface of rice field to be 30-50mm; secondly, after the seedlings are transplanted for 10-14 days, starting to carry out the drying and wetting alternative intermittent irrigation of a shallow surface layer of the rice field and irrigating the rice field until the water depth of initial field surface is 75-80mm; thirdly, when natural water on the field surface completely falls below the surface soil by 0-5mm, irrigating to the water depth of the initial field surface; fourthly, repeating the third step; in the process of repeating the third step, stopping the operation of the third step when rice grows to tillering stage and booting stage and keeping the water depth of the field surface to be 30-60mm; still operating according to the rule requirement of the third step during other growth stages of rice; and when the rice reaches yellow ripeness and the natural water on the field surface completely falls below the surface soil by 0-5mm, harvesting the rice.

The invention relates to a garden greening brick, which comprises a square frame, an implantation layer arranged in the inner part of the square frame and a cover body erected on the top of the squareframe, wherein the upper part of the outer wall of the square frame is a vertical plane, an interlocking unit is arranged at the lower part, when laying, the upper part of the adjacent green brick square frame is in close contact with each other, and the lower part is mutually matched and fixed by the interlocking unit. Compared with the prior art, the interlocking unit arranged at the lower partof the outer wall of the square frame can effectively fix two adjacent green bricks and is convenient to install. Strong drainage capacity, and who will not accumulate; At the same time, the rainwater can be effectively preserved and the irrigation water quantity can be reduced by setting the water locking layer.

The invention discloses a water-saving and stable-yield irrigation method of winter wheat. According to different moisture requirements of the winter wheat in different stages of the whole growth period, comprehensive measures, such as straw mulching for soil moisture conservation, water-saving fertilization, reasonable tillage, seedling control with water and precise irrigation, are adopted; theirrigation time and the irrigation quota in each growth period are determined; moisture requirements of the winter wheat in a critical growth stage are satisfied; furthermore, wheat population development can be controlled through soil moisture management; a high-yield, stable-yield and anti-lodging population structure is formed; the irrigation water utilization efficiency and benefits are increased; and double purposes of the winter wheat including water saving and stable yield can be realized. The water-saving and stable-yield irrigation method of winter wheat in the invention is simple andconvenient to operate and affordable, and suitable for being popularized and used in an area with limited irrigation due to water shortage.

The invention discloses a synchronous pumping irrigation frequency conversion system and a control method. The frequency conversion system comprises a water supply module for delivering irrigation water, a humidity detection module for detecting humidity of a planting area, and a frequency conversion control module for controlling the working state of the water supply module. The water supply module comprises a water delivery pipe and a water supply pump, and two ends of the water delivery pipe respectively extend into a water supply source and the planting area. The humidity detection moduleis arranged in soil of the planting area. The frequency conversion control module comprises a frequency converter and a controller, and a normal moisture range required for plant growth is recorded inthe controller. The humidity detection module, the frequency converter, the controller and the water supply pump are in electrical signal connection. The synchronous pumping irrigation frequency conversion system and the control method have the advantages that irrigation can be performed automatically according to actual conditions of plants, needs of the plants can be met to the greatest extent,the amount of the irrigation water can be controlled in real time, and the system is suitable for different irrigation scenarios.

The invention discloses a farmland irrigation and drainage control system which comprises a detection module, a manual control module, an irrigation module and a discharge module, wherein the detection module is mounted in a farmland, the irrigation module is mounted at a water inlet of the farmland, the discharge module is mounted at a discharge port of the farmland, a frequency converter A on anirrigation water pump is electrically connected with a processor, and a frequency converter B on a discharge pump is electrically connected with the processor. According to the system, the detectionmodule comprises a rainfall monitoring module and can detect rainfall in raining, irrigation and drainage are automatically implemented by the system when raining is absent, manual operation is omitted, automation degree is high, the control module controls the irrigation module to irrigate crops according to the rainfall in raining, the irrigation water pump is closed in advance, irrigation wateris reduced, water resources and power sources are saved, the system is more environmentally friendly, the power of a discharge water pump is increased to discharge water according to the rainfall when water is discharged, damage caused by high-level water to the crops is avoided, and growth of the crops can be facilitated.

The invention discloses an environment-friendly soil conditioner and a preparation method thereof. The environment-friendly soil conditioner comprises salicylic acid and derivatives thereof. The environment-friendly soil conditioner and the preparation method thereof have the advantages that the soil conditioner is simple in preparation process and rich in raw material source, the soil conditioneris a granular soil conditioner prepared by mixing raw materials according to a certain proportion range, the proportion range is reasonable, and the effects of the raw materials are synergistically enhanced; pollution discharge in the preparation process is avoided; irrigation water quantity for crops planted in soil improved by the soil conditioner can be reduced by about 1/3 as compared with the traditional irrigation water quantity of the same local crops planted in soil not improved by the soil conditioner; by the preparation method, waste generated in the cosmetics production industry can be treated; by the soil conditioner, saline and alkaline land or heavily alkalized soil can be improved into arable land, crops can well grow in the improved land, and evident economic benefits areachieved.