青海东部地区春油菜"3414"肥效试验研究

目的]确定青海省东部农业区春油菜的最佳氮、磷、钾施肥配比，为春油菜的配方施肥提供科学依据。方法]以青杂2号为春油菜供试品种，施肥采用农业部推荐的“3414”最优回归设计，共设3个因素4个水平14个配方处理进行春油菜的氮、磷、钾施肥配比试验。结果]各施肥处理中，N，P，K：（N101．25kg/hm2、P：0，112．80kg/hm2、K2O45．00kg/hm2）的产量最高，为3802．5kg/hm2；其次是N2P2K0（N101．25kg/hm2、P2O5 75．15kg/hm2、K2O0kg/hm2），产量为3735．0kg/hm2。通过“3414”肥料效应试验，获得青海东部地区春油菜肥料效应函数方程，由此数学模型得出理论上的氮、磷、钾最佳施肥量为：N128．60kg/hm2，R0590．60kg/hm2，K2O55．10kg/hm2，最佳产量可达3471．5kg／hm’。结论]综合分析不同施肥方法的推荐施肥量，并结合青海东部农业生产实际，建议氮、磷、钾的施肥量分别为N120．00kg/hm2、P2O5 90．00kg/hm2、K2O 50．00kg／hm2。

Study on Fertilizer Effect of 3414 Experimentation for Spring Oilseed Rape in Eastern Qinghai Province

Objective] The study aimed to confirm the optimum ratio of N,P and K for spring oilseed rape in agricultural area in eastern Qinghai Province and provide the scientific basis for formula fertilization of spring oilseed rape.Method] With Qingza 2 as the test variety of spring oilseed rape,14 treatments of formula fertilization with 3 factors and 4 levels were set up by using the optimum 3414 regress design recommend by Agricultural Ministry to conduct the experiment of the ratio of N,P and K for spring oil...