Management of corn stalking

After the corn is plucked, it begins to enter the reproductive growth stage, which plays a decisive role in corn yield.

Avoid drought. At the ear of corn, the water consumption is the largest, accounting for 30% to 35% of the total water consumption in the whole life. The water consumption intensity during the tasseling period is the largest, which is the critical period of corn water demand. The drought and water shortage will cause different degrees of production reduction, or even the harvest, serious. Affect the output. When the relative water content of the soil is less than 70%, it is necessary to water it in time to avoid the drought and reduce production.

Make up the grain fertilizer. The earing stage is the period in which the corn needs the most fertilizer and the maximum fertilizer strength in the whole life, and it is necessary to topdress the fertilizer according to the situation. For the de-fertilized corn, the granular fertilizer is generally applied during the tasseling to the silking stage. The nitrogen fertilizer is mainly used, and about 10 kg of urea per acre can promote grain filling and increase the seed setting rate and grain weight.

Remove empty stalks. The empty stalk plants affect the ventilation and light transmission of the field, and compete with the normal plants for water and fertilizer, air consumption of nutrients, and possibly spread diseases, which seriously affect the yield and should be removed early. In addition to the upper ear, the second and third ear development of the corn plant is slow. In addition to the special variety, such spikelets are generally not strong, and such "clams" should also be removed to reduce nutrient inefficient consumption. The main ear is full, the rods are large and the grains are full, and the yield is increased. When removing empty stalks and "crowbars", we must also take care of removing diseased plants and reducing the spread of pests and diseases.

Pest control. Common pests and diseases in the late stage of maize include stem rot, leaf spot, smut, corn borer, armyworm, aphids, etc., and should be actively controlled. For the armyworm, it can be sprayed with a salt of M. sulphate, Bacillus thuringiensis or KK. When it is serious, it is separated by 7 to 10 fields and sprayed 2 to 3 times. For corn leaf spot, spray with 5% chlorothalonil or 75% mancozeb, 70% thiophanate or the like. Spraying can be combined with spraying potassium dihydrogen phosphate to prevent premature aging.

Late harvest at the appropriate time. The promotion of suitable late harvest technology can ensure that corn has sufficient grouting time, which is an effective measure to increase grain weight and increase production and income. The standard for maturity of maize is that the leaves are white, dry and loose, the milk line disappears, and the grain is shiny. At this time, the grain weight is the highest. This technique does not require any additional cost input. The test proves that the average yield of 1000-grain weight is increased for every one day postponed. 3 grams or so.

Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone

Roughness Measuring Instrument

Roughness meter, also known as surface roughness meter, surface smoothness meter, surface roughness tester, roughness measurement meter, roughness tester, and other names. It has the characteristics of high measurement accuracy, wide measurement range, easy operation, portability, and stable operation. It can be widely used for the detection of various metal and non-metal processing surfaces. This instrument is a pocket instrument that integrates sensors and hosts, with handheld characteristics, making it more suitable for use in production sites. The exterior design is sturdy and durable, with significant resistance to electromagnetic interference, in line with current design trends.

The application fields of roughness meters include:

1. Mechanical processing and manufacturing industry, mainly metal processing and manufacturing. Roughness meters were originally developed to detect the surface roughness of machined parts. Especially, stylus type roughness measuring instruments are more suitable for detecting hard metal surfaces. For example, the automotive parts processing and manufacturing industry, the mechanical parts processing and manufacturing industry, and so on. As long as these processing and manufacturing industries involve the surface quality of workpieces, the detection application of roughness meters is essential.

2. In the non-metallic processing and manufacturing industry, with the progress and development of technology, more and more new materials are applied to processing processes, such as ceramics, plastics, polyethylene, etc. Some bearings are now made of special ceramic materials, and pump valves are made of polyethylene materials. These materials have a hard texture, and some applications can replace metal materials to make workpieces. During production and processing, their surface roughness also needs to be tested.

3. With the continuous strengthening and improvement of the technology and functions of roughness meters, as well as their in-depth promotion and application, more and more industries have been found to require roughness detection. In addition to mechanical processing and manufacturing, roughness evaluation is also required in the production and processing of power, communication, electronics, such as couplings on switches, integrated circuit semiconductors, and even stationery, tableware, and other products used in people's daily lives The surface roughness of human teeth needs to be tested.

Roughness Measuring Instrument,Surface Roughness Tester,Roughness Tester,Mitutoyo Roughness Tester

Zhejiang dexun instrument technology co., ltd , https://www.dexunmeasuring.com