Chemical control cultivation is an emerging technology in agricultural production. The implementation of chemical control cultivation of wheat can regulate the growth and development of plants, enhance their resistance to stress, and promote early maturity and high yield. 1. Prevent lodging 1 spray paclobutrazol. During the period of wheat uplift, spraying 30mg of paclobutrazol solution per acre is 30kg, which can make the plant dwarf, increase the lodging resistance, and can cure the wheat powdery mildew and improve the nitrogen absorption and utilization rate of the plant. 2 spray chlormequat. For the large and long-growing wheat fields, the spraying of 0.15%-0.3% chlormequat solution 50kg-75kg in the early stage of jointing can effectively inhibit the internode elongation, dwarf the plant, and thick the stem base. Hard, thus preventing lodging; if mixed with 2,4-D butyl ester, it can also treat broadleaf weeds in wheat fields. 3 spray to help me. In the jointing stage of wheat, 15 ml to 20 ml per acre, and 50 kg to 60 kg of foliar spray on water, can inhibit internode elongation, prevent late lodging, and increase production by 10% to 20%. 2, enhance drought resistance in the wheat booting stage, using 50 grams of drought-resistant agent per acre, 2.5 kg to 10 kg of water, fully dissolved and then sprayed with ultra-low volume, can reduce the opening angle of the pores on the leaf, improve the plant Water potential, reduce transpiration intensity, enhance root activity, delay leaf senescence, an average yield increase of 16.6%; in water-deficient areas and dry crops, the effect is better. 3, to prevent dry hot air, increase 1000-grain weight 1 Spray ABT rooting powder. In the jointing stage of wheat, foliar application with 5-15ppm ABT No. 4 rooting powder solution can increase the tillering rate, increase the number of ears per mu, enhance the root activity, delay leaf senescence, prevent dry hot wind and increase yield by more than 12%. 2 Spray triacontanol. In the wheat heading stage and the flowering stage, spraying with 0.5ppm triacontanol solution can increase the number of grains per ear by 8.1%, increase the weight of 1000 grains by 5.6% to 6.8%, and increase the yield by 10%-20. %. 3 spray oil booster. During the period from wheat flowering to filling, the rice sprayed 1000 times of oil-promoting agent solution 50 kg, which can prevent dry hot air and increase 1000-grain weight, with an average yield increase of 7.8%. 4 spray phenoxyacetic acid. In the grain filling stage of wheat, 25 kg of 60 ppm phenoxyacetic acid solution can also prevent dry hot air and increase 1000-grain weight. 5 spray naphthalene acetic acid. Before the wheat is grouted, 50 kg of 40 ppm naphthalene acetic acid solution can be sprayed per mu, which can increase 1000-grain weight. 6 spray sodium bisulfite. Sodium bisulfite is a photorespiration inhibitor; in the period from the booting of the wheat to the filling stage, 50 g of sodium bisulfite per acre is sprayed on 50 kg of water, and sprayed again every 10 days or so, which can increase the yield by more than 10%. 4. Promote early ripening 1 application of rare earth. Rare earth is also called rare earth micro-fertilizer or rare earth nitrate. The trade name is Changle Yizhi, which is a new type of rare earth element fertilizer which was firstly promoted and promoted in China. In the jointing stage of wheat from the beginning to the beginning, the mu spray is 0.08%~0. 1% rare earth solution 50 kg ~ 60 kg, the maturity can be advanced 1 day to 2 days, an increase of 8% to 11%. 2 spraying plant cytokinin. In wheat jointing stage or heading stage, plant cytokinin 50g, water 200kg ~ 300kg, stir well and spray according to conventional methods, can promote chlorophyll formation and protein synthesis, enhance photosynthesis and stress resistance It is conducive to early maturity and high yield. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Roundness Measuring Instrument
A roundness meter is a measuring tool that uses the rotation axis method to measure the roundness error of a workpiece. The roundness tester is divided into two types: sensor rotary and workbench rotary. During measurement, the measured part is installed concentric with the precision shaft system, and the precision shaft is equipped with an inductive length sensor or workbench for precise circular motion. The roundness meter consists of an instrument's sensor, amplifier, filter, and output device. If the instrument is equipped with a computer, the computer is also included in this system.
A roundness meter is a precision instrument used to measure the out of roundness of a rotating surface (shaft, hole, or spherical surface) of a component. There are usually two types: small desktop, where the workpiece is mounted on a rotating workbench and the measuring head is mounted on a fixed column; Large floor mounted, with the workpiece installed on a fixed workbench and the measuring head installed on the rotating spindle. During measurement, the measuring head contacts the surface of the workpiece, and the rotating part of the instrument (workbench or spindle) rotates for one cycle. Due to the extremely high accuracy of the supporting bearings in the rotating part, the measuring head will generate a high-precision circular trajectory on the measured surface during rotation. The out of roundness of the measured surface causes the measuring head to shift and transform into an electrical (or pneumatic) signal. After amplification, it can be automatically recorded on a circular recording paper, and the out of roundness of each part can be directly read out for accuracy evaluation and process analysis. Widely used in precision bearings, machine tools, and instrument manufacturing industries.
The roundness meter adopts a radius measurement method and operates in a rotating manner. The rotation axis system of the roundness meter adopts a high-precision air floating spindle as the measurement reference; The electrical part of the roundness tester is composed of advanced computers, precision circular grating sensors, and precision inductance displacement sensors. The circular grating sensors and precision inductance displacement sensors measure angle and radial displacement, ensuring the accuracy of measuring the angular displacement and radial value of the workpiece; The roundness meter measurement software adopts a roundness measurement software based on the Chinese version of WinXP operating system platform, completing data collection, processing, and measurement data management.
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