不同遮光度对枳椇实生苗生长的影响

Effects of Different Shading on Seedling Growth of Hovenia acerba

为探讨遮阳网不同遮光度对枳椇实生育苗生长的影响,该试验分别设置4种处理(即全光照、30%遮光度、50%遮光度、70%遮光度),并对枳椇实生育苗的发芽率、存活率、苗高、地径进行调查与分析。经方差分析和显著性检验,结果表明,不同遮光度对枳椇实生苗生长的影响均达到极显著水平,苗高生长以70%遮光度的D处理为最高,即148.6 cm;枳椇实生苗的发芽率、存活率、地径的生长均以50%遮光度的C处理为最高,分别为54.0%、85.8%和13.4 mm。同时,建议在枳椇实生苗生产实践中,尽量采用50%遮光度的遮阳网进行覆盖,以提高枳椇实生苗生长、苗木质量等级等。

In order to investigate the effects of different shading degrees on the growth of Hovenia acerba seedlings,four treatments(total illumination,30%shading degree,50%shading degree and 70%shading degree)were set up,and the germination rate,survival rate,seedling height and ground diameter of Hovenia acerb seedlings were investigated and analyzed.The results of variance analysis and significance test showed that the effects of different shading degrees on the growth of Hovenia acerb seedlings were extremely significant,and the seedling height was the highest except that the D treatment with 70%shading degree was 148.6 cm.The highest germination rate,survival rate and ground diameter of Hovenia acerb seedlings were 54.0%,85.8%and 13.4 mm in 50%shading C treatment,respectively.At the same time,it is suggested that in the production practice of Hovenia acerb live seedlings,the shading net with 50%shading degree should be used to cover the Hovenia acerb live seedlings,so as to improve the growth of Hovenia acerb live seedlings and the quality grade of seedlings.