Abstract:

In order to explore the application effects of different types of formula fertilizers and fertilizer application methods, field experiments were conducted on nitrogen reduction application of different types of formula fertilizers in rice production. The results showed that the application of formula fertilizer significantly increased the number of tillers in rice, increased the panicle formation rate, increased the effective panicle number and seed setting rate, stabilized the number of grains per panicle and thousand grain weight, and thus increased rice yield. When nitrogen was reduced by 10% in the slow-release formula fertilizer treatment, compared with the conventional fertilization treatment, the maximum economic benefit increased could reach 11.6%, achieving a maximum increase of 3 696.0 yuan·hm^-2 in income. Taking into account the main agronomic traits, yield, and economic benefits, the application of formula fertilizers effectively reduced the production cost of rice, increased economic benefits, and ultimately achieved the goal of reducing fertilizer usage amount, cost saving, and efficiency enhancement.

Key words: formula fertilizer, slow-release fertilizer, rice, reducing fertilizer amount and increase effectiveness