Tomato cleverly supplements calcium and promotes health

At the early stage of tomato calcium deficiency, the edge of the heart leaf becomes yellow and shrunk, and when it is severe, the heart leaf withers. The middle leaves of the plant formed large dark-brown patches, and then the whole leaves rolled over and lost their green color, showing a light yellow color. Water-stained light yellow-brown to dark green-brown spots appear on the navel of the fruit, the surface is uneven, and the diseased tissue is necrotic (ie, umbilical rot). During the period of fruit expansion and maturity, if the calcium supply is insufficient, the fruit will be cracked and the fruit will be poorly colored, resulting in green-backed fruit, glutinous fruit, and brown fruit.

Prevention. Spray 0.3%～0.5% calcium nitrate aqueous solution on the foliar to supplement the calcium element of tomato. Generally, it is sprayed once every 7 to 10 days, and sprayed continuously for 2 to 3 times. Generally, calcium is supplemented during the period of tomato fruit expansion and maturity. In addition, using superphosphate or calcium magnesium phosphate fertilizer as base fertilizer, 80-100 kg per mu, can significantly increase the calcium content of the soil. The active calcium content is significantly increased, which is beneficial to the absorption and utilization of tomato roots and avoids calcium deficiency during tomato growth and development. If the tomato is planted in acid soil, when planting tomatoes on the ground, spray 50-60 kg of hydrated lime powder per acre to neutralize the acidity of the soil and increase the calcium content of the soil. At the same time, spray the fruit to strengthen the stalk during the tomato growth period. Ling can activate the positive energy of plant ecological growth, broaden the path of plant conduits, increase the strength of plants to absorb water and fertilizer, and increase the yield and quality of fruits.

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