Bio:
Email: szq17568267769@163.com
孙子钦(1999—),男,硕士研究生,主要从事土肥高效利用研究;szq17568267769@163.com
为考察新型植物油包膜控释氮肥对间作玉米-大豆的产量、经济效益、肥料利用率等方面的影响,开展了田间小区试验。试验以不施氮肥(CK)、施用普通尿素(PU)处理为对照;植物油包膜控释氮肥施肥量为全量、减量20%、减量30%等3种,控释氮占总氮量为60%、40%等2种,共设置4个处理。结果表明,在玉米试验中,与PU处理相比,控释氮占总氮量60%的全量、减量20%处理的产量分别显著增产14.70%、7.49%,纯收入分别显著增加3 192.80、2 680.02元/hm2;控释氮肥处理的氮素利用率为50.14%~53.43%,差异显著。在大豆试验中,与PU处理相比,控释氮占总氮量60%的全量处理显著增产16.67%,纯收入显著增加2 725.80元/hm2;控释氮肥处理的氮素利用率为54.12%~57.98%,差异显著。对于玉米-大豆间作栽培,建议全量或减量20%施用控释氮占总氮量60%的植物油包膜控释氮肥。
In order to investigate the effects of a new type of vegetable oil coated controlled-release nitrogen fertilizer on the yield, economic benefits, and fertilizer utilization efficiency of intercropping maize-soybean, a field plot trial is conducted. The trial take no nitrogen fertilizer (CK) and ordinary urea (PU) treatment as controls. The fertilization amount of vegetable oil coated controlled-release nitrogen fertilizer have three types: full amount, 20% reduction in nitrogen, and 30% reduction in nitrogen. The controlled-release nitrogen accounts for 60% and 40% of the total nitrogen, and 4 treatments are being set up. The results show that in the maize experiment, compared with PU treatment, the total amount treatment with controlled-release nitrogen accounting for 60% of total nitrogen and 20% reduction in nitrogen increase yield significantly by 14.70% and 7.49%, respectively, and the net income increased significantly by 3 192.80 yuan/hm2 and 2 680.02 yuan/hm2. The nitrogen utilization efficiency of controlled-release nitrogen fertilizer treatment ranged from 50.14% to 53.43%, with significant differences. In the soybean experiment, compared with PU treatment, the total amount treatment with controlled release nitrogen accounting for 60% of total nitrogen significantly increased yield by 16.67%, and the net income significantly increased by 2 725.80 yuan/hm2. The nitrogen utilization efficiency of controlled-release nitrogen fertilizer treatment is 54.12% to 57.98%, with significant differences. For maize-soybean intercropping cultivation, it is recommended to apply vegetable oil coated controlled-release nitrogen fertilizer, which accounts for 60% of the total nitrogen, in full or with a 20% reduction in nitrogen.