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为探索高产稳产毛竹笋用林经营技术,以研究施肥方法为主,利用正交设计原理,布置了一个具有2次重复,4因子3水平(A.毛竹林密度,B.挖山深度,C.施肥剂量,D.施肥时间与次数)的试验,设计中加设无处理措施的对照小区,以增加试验结果的可靠性。 连续5年分别统计10种处理的春笋产量,并对数据进行正交设计的直观分析和时间裂区设计的方差分析。结果表明,处理2(A_1B_2C_2D_2)、处理4(A_2B_2C_2D_3)和处理5(A_2B_2C_3D_1)为试验中的三种最佳处理组合,于正常年景可比对照增产近10倍。据综合分析的结果,建议在我国亚热带中、北部山地毛竹笋用林中推行中等水平(A_2B_2C_2D_2)的经营方式。采用该套技术经营的毛竹笋用林,每度(二年)每公顷林地可以增产春笋2万kg左右,除去经营成本可增收0.7万元。
In order to explore the management techniques of bamboo shoots with high and stable yield, the fertilization method was mainly researched. Using the orthogonal design principle, a quadratic repeat, 4-factor 3 (A. moso forest density, B. . Fertilizer dose, D. Fertilizer time and frequency) of the test, the design of adding no control measures in the control plot, in order to increase the reliability of the test results. For five consecutive years, statistics were made on the yield of 10 treatments of spring bamboo shoots. The data were analyzed by orthogonal design and variance analysis of time split design. The results showed that treatments A 2 B 2 C 2 D 2, A 4 B 2 C 2 D 3 and A 2 B 2 C 3 D 1 were the best combinations of treatments in the experiment, which increased nearly 10 times in normal years compared with the control. According to the results of the comprehensive analysis, it is suggested that a medium level (A_2B_2C_2D_2) management mode be promoted in the forests of bamboo shoots in the northern mountainous areas in China’s subtropical zone. The bamboo shoots managed by this set of techniques can yield 20,000 kg per hectare of forest land per hectare (two years), and the operating cost can be increased by 7,000 yuan.