For the irrigation process, 700 cm 3 of water is sprinkle on each pot morning and evening in four days' interval for two months before adequate rainfall in the month of May. For the initial application, two weeks after germination, equal quantities of each fertilizer were used, with individual weights as follows: 20.0 g of Fertilizer A was applied near the roots of maize A and maize B, 32.80 g of NPK 20:10:5 fertilizers was applied to maize C, and 12.2 g of rabbit manure was applied to maize E. No fertilizer was applied to maize D, which served as the control (see Figure ). Fourteen days after the first application, a mixture of 17.2 g of Fertilizer B, calcium hydroxide (solid), and clay soil was applied to maize A, while a mixture of 21.0 g of Fertilizer C, calcium hydroxide (solid), and clay soil was applied to maize B. Maize C received 49.2 g of NPK 20:10:5 fertilizers, and maize E was given 18.3 g of rabbit manure (see Figure ). Fourteen days after the second application, maize A received a mixture of 21.8