It can provide a variety of nutrients. Fertilizers contain only one or several nutrients. They are applied in the rice field for a long time. Other nutrients will be absorbed in large quantities. Because of the lack of supplementation, some nutrients in rice are seriously insufficient and poorly grown. , or various diseases. The farmer's nutrition and nutrient elements are complete, which can supply the nutrients needed for rice growth in a long-term and comprehensive manner, thus promoting the normal and robust growth of rice. In recent years, some local rice diseases have occurred seriously. One of the important reasons is caused by the lack of trace elements. For example, the brown blight that has been re-emerged in the southern rice area for many years is mainly caused by zinc deficiency in rice fields. Farmyard manure not only contains large and medium-sized elements such as nitrogen, phosphorus, potassium, calcium, magnesium and sulfur, which are necessary for rice growth, but also trace elements such as iron, manganese, copper and zinc which are indispensable for rice growth and development. In addition, the application of farmyard manure in rice fields can reduce nutrient fixation and improve fertilizer efficiency. Tests have shown that after the fertilizer is applied to the paddy field, some nutrients are absorbed or fixed by the soil. For example, superphosphate is easily combined with iron and copper in acidic soil to form precipitates of insoluble iron phosphate, resulting in insufficient effective elements. The combination of fertilizer and chemical fertilizer can reduce the contact surface between chemical fertilizer and soil, thus reducing the fixation of fertilizer to the soil.
It can improve the long-term single application of chemical fertilizers in soil structure, which will reduce the humus content of rice fields year by year, the soil aggregate structure is destroyed, the aeration and water permeability is deteriorated, the soil compaction, the water storage and fertilizer retention capacity are reduced, and the rice yield is decreasing year by year. Improve soil structure, increase soil fertility, and increase the amount of effective nutrients in the soil. It is determined that after applying 2000 kg of farmyard manure and 100 kg of calcium silicate per mu of paddy field, the total amount of base exchange in 100 g of dry soil can be increased from 19.8 meq to 21.4 meq, and the total carbon amount is increased from 1.11% to 1.62%. The total nitrogen content increased from 0.1% to 0.13%, and the contents of elements such as calcium, magnesium and potassium increased. A large amount of farmyard manure is applied, in which a large amount of organic matter is decomposed by microorganisms in the soil, and an organic colloid is produced, which has a large amount of negative charge on the surface and can adsorb positively charged ammonium, potassium, calcium, magnesium in the soil. Zinc plasmas bind them tightly so that they are not lost due to leaching. Therefore, the more the farmland fertilizer is applied in the paddy soil, the higher the organic matter content, the stronger the soil fertility, and the stronger the ability to promote the formation of soil aggregate structure; the increase of clay pores and the decrease of viscosity, thus improving Its permeability. Planting rice on saline-alkali rice fields, such as using used farmyard manure as base fertilizer, can increase the content of organic matter in saline-alkali soil, forming agglomerate structure, making the soil of rice fields loose, thereby reducing or preventing the rise of soil capillary water, reducing ground evaporation and reducing Soil salt. If you use fertilizer alone, it will increase soil salinization and make the soil structure worse. Experiments have shown that in combination with organic fertilizer and chemical fertilizer in saline-alkali rice fields, the yield increase is significantly larger than that of single-application fertilizer; in addition, the humus formed by the farmyard fertilizer can absorb and dissolve certain pesticides and dissolve with heavy metals. The complex of water, which effectively reduces pesticide residues and heavy metal pollution, is conducive to the production of green and pollution-free rice.
It can improve low-yield cold-soaked rice fields. The muddy fields, hawthorn fields and rust paddy fields in the mountainous areas are all low-yielding cold-impregnated rice fields, which are all high-yield soil barrier factors. The common characteristics of cold-impregnated rice fields are high groundwater level, heavy soil, poor tillage performance, deep mud layer, low water temperature and low soil temperature, and more harmful substances such as divalent iron ions and sulfides in the soil. Affect the increase in rice yield. Application of decomposed farmyard manure in such rice fields can provide more humus colloids, thereby reducing soil bulk density, improving soil structure, improving soil water retention and fertilizer storage capacity, facilitating rice root growth and rice nutrient absorption, and Can improve soil temperature. In the process of decomposition, the farmyard manure can release a large amount of carbon dioxide and produce organic acids and other substances. The increase of carbon dioxide concentration in the air can further meet the needs of rice photosynthesis; the organic acid produced can make the soil insoluble in the original. The inorganic mineral salts and the insoluble fertilizers accelerate the transformation and become the nutrients that rice can absorb, thereby improving the effectiveness of the original nutrients in the paddy soil and improving the soil quality of the cold-impregnated fields.
It can improve the absorption capacity of phosphorus in rice. The soil has less fixation of phosphorus in farmyard manure, and 50%-60% of phosphorus in farmyard manure is water-soluble or citric-soluble, which can dissolve with phosphorus in chemical fertilizer and accelerate. Absorbed by rice. According to the Shanghai Institute of Plant Physiology, the application of soil extracts from farmyard manure with phosphate fertilizer can accelerate the rate of phosphorus entering the roots of rice. The rate of entry into the rice roots is three times faster than that of the control within one hour, and the speed of operation to the shoots of rice is faster than that of the control. Times. This fully proves that the combination of farmyard manure and chemical fertilizers can promote the absorption of phosphate fertilizer by rice.
The acidity and alkalinity of paddy soil can be adjusted. When acidic fertilizers such as ammonium sulfate and ammonium chloride are applied on acidic soil, the ammonium ions are absorbed and utilized, and sulfate is left. The sulfate ions combine with the hydrogen ions adsorbed by the soil colloid to form sulfuric acid, which makes the soil acidic. Reinforcement leads to soil compaction and destruction of soil structure. If the acidic fertilizer is mixed with organic fertilizer, the organic fertilizer can improve the buffering performance of the soil and adjust the pH, so that the soil acidity is not high. After the application of organic fertilizer, because it is rich in organic matter, it can also achieve the purpose of improving the acid soil structure and improving fertility.
It can alleviate the phenomenon of “small old seedlings†and the occurrence of diseases. The land that is applied to farmyard manure is loose, the soil is evenly distributed all the year round, the rice grows well, and there is little phenomenon of greed or “small old seedlingsâ€, and the seeds are full after maturity. At the same time, because farmyard manure contains a large number of disease-resistant actinomycetes, their metabolites can alleviate crop diseases, especially when rice blast occurs, which can reduce the incidence of rice blast.
The application of farmyard manure to rice fields does have many benefits and is worthy of promotion. However, the following points should be noted when using it: First, the unfertilized and high-content farmland fertilizer should not be mixed with nitrogen fertilizer. When a large amount of farmyard manure (such as crop straw) is decomposed by microorganisms, it needs to increase the absorption of nitrogen, which will accelerate the rapid-acting nitrogen to become delayed-effect nitrogen. Second, the human and animal excrement cannot be mixed with lime nitrogen, grass ash, etc., so as to avoid loss of fertilizer efficiency; It is not that the unfertilized farmyard manure is not suitable for mixing with the fertilizer of nitrate nitrogen. Because of its denitrification, nitrogen is easily volatilized.
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NICE3000+ Elevator High Performance Integrated Controller
Comprehensive Function Features
Direct-To-Floor
By the principles of distance, automatically generate the smooth curves from start of parking, no crawling and directly stop in the levelling position.
Optimum Velocity Profile Efficiency
The elevator controller will optimise the velocity profile based on the desired travel distance demand instead of floor number.
Advanced Door-Opening
Under the automatic operation state, the speed during stopping is less than 0.1 m/s and the gate signals effective, system shorts door-lock signal through advanced door-opening module and then opens the door ahead of time to enhance the elevator efficiency
Category Door Open Holding Set-Time
System can automatically identify different time to keep the open calls to open the door, instructions to open the door, the door to protect open, delay to open the door and to open the door inaccordance with the setting time.
Re-levelling
This may occur when the lift stops at the floor station, and a large number of persons or goods enter or leaves. The levelling fluctuates because of the elastic deformation of elevator Wire Rope and the rubber. System is allowed to run automatically at the relevelling speed to the levelling station with the door open.
Self-Rescue Levelling
The elevator is in its normal operating state, but doesn`t stop at the correct level. If it meets the safety requirements to run, the lift will automatically run slowly to the nearest floor area, and then open the door.
Emergency Inertia Rescue Mode
Applicable for permanent-magnet synchronous motors only. When there is a power failure, system will short-circuit the motor phases through its contactor and produce a restraining torque when in motion. Based on the elevator inertia, the elevator will slide slowly and controller will open the elevator door when it reaches levelling position.
Emergency Self-Rescue Time-Out Protection
When elevator is at balance load or rescue device power capacity is inadequate. Long rescue time lapse is expected and accident may occur. This function enables the system to self-disable the emergency operation.
Elevator Position Auto Calibration
Each time the elevator enters the terminal floor zone, system will self-calibrate the position counter with respect to the 1st slowdown limit switch so that elevator over travel operation will be eliminated.
Fire Alarm Rescue Function
Enable user to preset the elevator designated homing floor when fireman mode is enabled
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