配方施肥对白桦不同家系苗期生长的影响  

Effects of Prescription Fertilization on the Seedling Growth of Different Families of Betula platyphylla

作　　者：李天芳[1] 姜静[1] 王雷[1] 祝泽兵[1] 穆怀志[1] 杨传平[1] 刘桂丰[1] 

机构地区：[1]东北林业大学林木遗传育种与生物技术教育部重点实验室,哈尔滨150040

出　　处：《林业科学》2009年第2期60-64,共5页Scientia Silvae Sinicae

基　　金：国家科技支撑计划项目(2006BAD01A1603;2006BAD24B05);黑龙江省科技攻关计划项目(GA06B301)

摘　　要：选择7个白桦半同胞家系种子分别播种育苗,在苗木生长过程中配制T1、T2、T33种配方的氮磷钾混合营养液定期进行叶面施肥,系统地研究配方施肥对白桦不同家系苗期生长的影响对每个家系内3种施肥处理与非施肥处理的苗木苗高、高径比、茎根比进行方差分析和多重比较,确定各个家系的最佳施肥配方。结果为:家系1、家系3、家系4和家系5的最佳施肥配方均是T2,该施肥处理能够使白桦苗高提高13.43%～35.74%;家系6和家系7的最佳施肥配方均是T3,该施肥处理能够使白桦苗高提高24.93%和26.46%;家系2的最佳施肥配方是T1。3种施肥配方均能改善白桦苗期的生长,对7个家系总体而言,T2为最佳施肥配方。The genotypes of forest trees and the optimum mixture ratio for fertilization are crucial factors for breeding superior seedlings. In this experiment, seven half-sib families were selected for the culture of Betula platyphylla seedlings. During the growthperiod, three different nutrient solutions, with different mixture ratios of N.P. K, were used to fertilize the seedlings on the leaf surface regularly. Hitherto, this paper for the first time reported a systematical study of the effects of the formula fertilizer on different families of Betula platyphylla, which could provide theoretical bases for breeding superior seedlings with higher survival rate after being transferred from the nursery. After the variance analysis and multiple comparisons of several indexes, including the height and height to caliper ratio and shoot to root ratio, of each families under three different fertilization treatment as well as control, we found the optimum fertilizer prescription for each family. The results were as follows ： the optimum fertilizer prescription for F1, F3, F4, F5 was T2, promoting the seedling height by 13.43 % - 35.74 % ; the best fertilization prescription for F6, F7 was T3 which was able to enhance the seedling height by 24.93% and 26.46%; and the optimum fertilizer prescription for F2 was T1. The three fertilizer prescription all improved the growth during the seedling period. As for the seven families as a general, T2 was the best fertilizer prescription.

关 键 词：白桦家系 配方施肥 苗期生长 

分 类 号：S723.7[农业科学—林木遗传育种]