油茶幼林套种天门冬技术及效益分析

Technology and Benefit Analysis of Interplanting Asparagus cochinchinensis in Camellia Oleifera Young Forest

为研究油茶幼林套种天门冬对油茶幼林生长及经济效益的影响。在广西壮族自治区国有维都林场,采用“油茶+天门冬”套种模式和油茶纯林(CK)模式造林,连续3年测定2种种植模式内固定样地的油茶树高、地径、冠幅,并对2种模式前3年投入与产出作对比。2种不同的种植模式油茶造林成活率及3年保存率差异不显著;套种的第2、第3年,油茶树高、地径和冠幅差异均达显著水平;2年生时,套种天门冬的油茶比对照树高增长7.78%、地径增长30.2%、冠幅增长18.0%;3年生时,套种天门冬的油茶比对照树高增长4.3%、地径增长10.2%、冠幅增长12.1%;前3年油茶幼林套种天门冬复合经营收益为28180元/667 m^(2),油茶纯林为-6380元/667 m^(2)。这说明油茶幼林套种天门冬是一种科学可行的模式,可为广西油茶产业的发展提供一条“油茶+药材”的增益模式。

In order to study the effect of interplanting asparagine on young camellia sinensis forest and the benefits of interplanting,two different planting modes were used for afforestation the State-owned Weidu Forest Farm in Guangxi Zhuang Autonomous Region.The two planting modes were“Camellia camellia+Asparagus”and young camellia camellia pureseed(control).The height,diameter,and crown width of camellia camellia trees in the fixed plots of the two planting modes were measured for 3 consecutive years.The input and output of the two modes were compared in the first 3 years.There were no significant differences in the survival rate and 3-year preservation rate of the two planting modes.However,in the second and third years of interplanting,there were significant differences in tree height,ground diameter,and crown width.The tree height,ground diameter and crown width increased by 7.78%,30.2%,and 18.0%,respectively.At 3 years of age,compared with the pure forest,the height,diameter,and canopy width increased by 4.3%,10.2%,and 12.1%,respectively.In the first 3 years,the profit of the complex management of the interplanting of the young forest of camellia oleifera was 28,180 yuan/667 m^(2),while the pure forest of camellia oleifera had a profit of-6380 yuan/667 m^(2).The interplanting of asparagine in the young forest of camellia oleifera is scientific and feasible,and can provide a“camellia+medicine”gain model for the development of the camellia oleifera industry in Guangxi.