Correctly judge the symptoms of crop deficiency

Properly identifying the symptoms of nutrient deficiencies in crops and applying fertilizers accordingly is essential for improving both yield and quality. Timely nutrient supplementation ensures that plants receive what they need to grow strong and healthy. First, nitrogen deficiency often manifests through several visible signs. New shoots become thin and short, leaves are small, erect, and pale green, with red discoloration on petioles, veins, and the cortex. Flowering is reduced, fruits drop early, and root systems develop more fine roots while fewer large roots form. The new roots may turn yellow, reducing the plant’s resistance to pests and drought. In soybeans, for example, nitrogen deficiency starts from the lower leaves, which gradually lose color, turning pale green, then yellow, and sometimes showing bronze spots. Severe cases can lead to stunted growth and leaf loss. Second, phosphorus deficiency affects different crops in various ways. In wheat, seedlings grow slowly, the root system is underdeveloped, tillering is reduced, and the base of the stem turns purple. Leaves appear dark green or slightly purplish, ears are small, and grain weight drops significantly. In maize, young plants grow slowly, and by the fifth leaf stage, the leaves turn purple, with small, curved cobs and poor kernel development. Soybean plants show dark green or black-green leaves that are narrow and upright, with slow growth. In severe cases, stems may turn red, and after flowering, brown spots may appear on the leaves. Fruit trees suffering from phosphorus deficiency show poor fruit quality, sparse foliage, yellowish-brown leaves, and early leaf drop. Third, potassium deficiency typically shows as yellowing at the tips of lower leaves, spreading along the edges while the central veins remain green. In severe cases, the entire leaf turns yellow, with burnt edges. Cereals have weaker tillering and soft stems prone to lodging. Dicot leaves curl, shrink, and may break, but the center remains green. Root crops suffer from poor quality, and fruits ripen unevenly, with a woody texture and sour taste. Author: Changji Source: Hubei Agricultural News

Low Porosity Refractory Brick

Low porosity clay bricks are made of low aluminum mullite as the main raw material, formed by high pressure molding and high temperature sintering. The main mineral composition is mullite phase, the product has excellent high temperature physical properties and chemical erosion resistance.
Low porosity clay brick stability is good, the degree of erosion does not occur sudden change, than ordinary clay brick life increased by 2 to 3 times. Thermal conductivity, specific heat and solubility, respectively, than ordinary clay bricks 2 times higher than 10% and 40%, heat storage capacity than ordinary clay bricks 50% to 60% higher than the thermal efficiency of the kiln can be improved.

Low porosity clay bricks are characterized by:
1. Low porosity, 13 to 15%;
2. Load softening temperature is high for about 1472 ℃;
3. High compressive strength at room temperature, generally about 100MPa;
4. Good volume stability at high temperature and good abrasion resistance;
5. good resistance to infiltration and erosion.

Low porosity clay brick as a good clay refractory brick products, so often used in chemical erosion, temperature fluctuations in the environment, such as steel, glass, chemical industry. The effect is quite obvious in the use of glass hot room and the use of iron water tank.

Suitable for Plugging Oven Holes,Clogging Refractory Clay Bricks,Clogging Refractory Clay Brick

Huixian Xinwei Refractories Co. , http://www.xinweirefractory.com