摘要
采用二次回归正交组合设计，通过田间小区试验，研究了氮磷钾配合施用对青贮玉米产量和营养品质的影响。结果表明，综合考虑青贮玉米最大生物产量和经济效益，其适宜的氮肥（N）用量范围为308．4—365．0培柑，磷肥（P2O5）适宜用量范围为100．1—117．0kg／hm^2，钾肥适宜用量（K2O）范围为65．5～89．8kg俯。不同施氮和施磷水平对青贮玉米中粗蛋白含量有一定的影响。磷和钾的施用有助于干物质含量和钙的提高。
The orthogonal combination design of quadratic regression was adopted in this experiment. Effect of interaction among nitrogen, phosphorus potassium coordinating on the organism yield and nutrient qualifies of silage maize was studied by field experiment. The results showed that the range of N, P2O5, K2O optimal composite scheme was 308.4 - 365.0 kg/hm^2, 100.1 - 117.0 kg/hm^2, 65.5 - 89.8 kg/hm^2. This result provided an optimum composite scheme of N, P2O5, K2O for an aimed yield. The protein in silage plant was affect by different N, P2O5 fertilization level and P2O5, K2O fertilization could increase the dry matters and calcium content.
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2007年第6期42-45,共4页
Soil and Fertilizer Sciences in China
基金
黑龙江省博士后基金资助
