摘要
吉林省东、中、西不同类型土壤田间试验结果表明:不同类型土壤的氮、磷、钾肥施用模式符合二次曲线Y=ax2+bx+c。利用该模式,结合肥料和玉米价格进行综合分析,明确了不同类型土壤上的氮、磷、钾施用效益,即东部冲积土玉米最佳施肥量为N192kg/hm2、P2O556kg/hm2、K2O33kg/hm2;中部黑土玉米最佳施肥量为N133kg/hm2、P2O538kg/hm2、K2O47kg/hm2;西部淡黑钙土玉米最佳施肥量为N59kg/hm2、P2O565kg/hm2、K2O51kg/hm2。
Field experiment conducted on the different types of soil in the east, middle and west parts of Jilin province showed that the N, P and K application mode could be expessed by the ,quadratic equation.Y=ax^2＋bx＋c, and through this mode by the maize and fertilizer price, we made sure that the optimum fertilizer rates on the alluvium soil of the east part of Jilin province was N 192 kg/ha, P2O5 56 kg/ha and K2O 33 kg/ha respectively, and the optimum fertilizer rates on the black soil of the middle part of Jilin province was N 133 kg/ha, P2O5 38 kg/ha and K2O 47 kg/ha respectively, the optimum fertilizer rates on the light chemozem soil of the west part of Jilin province was N 59 kg/ha, P2O5 65 kg/ha and K2O 51 kg/ha respectively.
出处
《玉米科学》
CAS
CSCD
北大核心
2008年第4期167-171,共5页
Journal of Maize Sciences
基金
国家粮食丰产科技工程子课题(2006BAD02A10-6-1)
中加合作项目(IPNI)平衡施肥示范计划
关键词
土壤类型
施肥模式
施用效益
吉林省
Soil types
Fertilization mode
Application effect
Jilin province
