Heavy calcium has obvious yield-increasing effects on most crops such as wheat, rice, soybean, corn, talented, etc., such as: can promote early maturity of rice, increase tillering, vigorous growth, thick stems, early heading, and reduce openness; Promote the growth and early maturity of maize seedlings, and promote the plant height, ear weight, grain per spike, and 1000-grain weight; promote wheat growth in the flood season, robust plants, promote tillering, and have obvious yield-increasing effects; Not only does it maintain good nutrients in the soil, it also enhances root development, increases root , and increases nitrogen supply. Yes, 1, centralized use, 2, mixed with organic fertilizer application, 3, layered application, 4, root external application.