Functional Additive For Concrete And Mortar
Many other additives used for concrete or mortar are included here, for example, powder deformer, expansion agent, Hydrophobic Agent. Depending on the requirement of conrete or mortar, different product grade and dosage can be selected to add.
deformer,expansion agent,hydrophobic agent,silane powder,stearate,Expansion additive for cement,deforming agent Shanghai Na Long Tech Co., Ltd , https://www.na-long.com
How does carrot get high yield?
Any crop can be produced with high yield. Let's take a look at how carrots get high yield. Xiaobian introduces four aspects: selection of excellent seeds, soaking and germination, planting and field management. How do carrots get high yield?
How does carrot get high yield:
Choose the best species: plant early spring carrots, should choose anti-twitching, short growing season, red color, straight spring sowing varieties.
Soaking seeds and germination carrot seeds are not easy to absorb water and breathe, and the spring sowing temperature and ground temperature are low, the seeds are germinated and emerged slowly, and soaking seeds can be germinated. 4-5 days before sowing, soak the seeds in warm water of 30-40 °C for 3-4 hours, remove them and put them in a cotton wet cloth bag, germination at 20-25 °C, keep the seeds moist, and turn them regularly. The temperature and humidity are even, and most of the seeds can be sown after being exposed to white.
Sowing on the whole land: deep tillage and fertilization, fine land preparation, 5,000 kg of farmyard manure and 50 kg of NPK compound fertilizer. Deep plowing 25-30 cm, and leveling fine. In the south-central part of central Guizhou, it is advisable to plant in small arch sheds in late March. Watering first, after the water seeps into the soil, sowing, often using the method of striping, ditching according to the line spacing of 17 cm, the ditch depth is 2 cm, smoothing after sowing, immediately buckle the shed to cover the plastic film, try to increase the ground temperature and promote emergence.
Field management: and time seedlings, fixed seedlings, the general plant spacing is about 15 cm. Before cultivating the ridges, cultivating 2-3 times, the fine soil is transplanted to the roots to prevent the roots from expanding and exposing the ground to form a green shoulder. After entering May, the temperature has risen remarkably, the rhizome has expanded rapidly, and the demand for water and fertilizer is more. According to the plant growth in the field, combined with watering, 20 kg of nitrogen and potassium fertilizer should be applied, and 2-3 times of topdressing should be applied to meet the growth of rhizomes. The demand for nutrients ensures production.
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