【摘要】 应用正交实验设计,对新播长白落叶松苗期进行了N、P、K施肥试验,结果表明:N、P影响苗高、地径、植株干物质重量;>5 cmⅠ级侧根数量的差异为极显著;K差异不显著。通过对25个组合的LSR多重比较,最佳施肥量为:N肥20、P肥50、K肥15 g.m-2苗木生长与N、P、K供应呈多元线性回归关系。更多还原

【Abstract】 Using orthogonal test design,fertilizer tests with N,P,K were conducted during seedling stages of Larix olgensis which were newly sowed.Results showed that effect of fertilizer N and P on seedling height,ground diameter,dry matter weight of plants,amount of lateral root >5cm（Ⅰgrade） were significantly different and that of fertilizer K was not significantly different.By multiple comparison on 25 compositions,the optimal fertilizing amount of N,P,K were(20g·m^-2),(50 g·m^-2),(15g·m^-2).The growth of seedlings and supply of N,P,K were multivariate linear regression relationships.更多还原