论文部分内容阅读
杉木苗期的施肥试验,应用二次通用旋转组合回归设计的方法进行实验,得出关于杉木苗木总生物量的氮磷钾反应模式。对所获得的方程,利用电子计算机在氮、磷、钾的施用范围内计算出方程的最大总生物量时分别氮、磷、钾最佳施用量为: N:67.5千克/公顷P_2O_5:170.4千克/公顷K_2O:3.9千克/公顷并利用回归模式对各种肥料要素的单独反应规律及互作效应进行探讨,掌握它们的变化规律。同时对生产性的推广应用方法及其经济效益加以说明和估算。
Fertilization experiment of Chinese fir seedling stage was carried out by means of quadratic universal rotary combination regression design to get the N, P and K reaction modes about the total biomass of Chinese fir seedling. For the obtained equation, the optimal application rates of nitrogen, phosphorus and potassium for the equation of maximum total biomass in the range of application of nitrogen, phosphorus and potassium by computer were: N: 67.5kg / ha P_2O_5: 170.4kg / Hectare K_2O: 3.9 kg / ha and using the regression model to study the individual reaction rules and interaction effects of various fertilizer elements and to grasp their changing rules. At the same time, the method of popularization and application of production and its economic benefits are explained and estimated.