花椒不同造林密度成效试验研究

Study on Effects of Different Planting Density of Zanthoxylum bungeanum

在天水地区温暖半湿润半干旱气候条件下,对花椒不同造林密度成效进行对比试验研究。结果表明:造林密度对花椒成活率影响不明显,但对生长量和结果量影响显著。营造花椒经济林,采取3 m×4 m、3 m×3 m株行距,花椒树生长快、树形成型早,定植后第3年开始结果,第6年实现丰产,平均产花椒果皮1 350kg/hm2以上;营造花椒生态经济兼用林,株行距采取2 m×4 m、2 m×3 m,第4年按隔株挖除的方法调整栽培密度,能增加枝量,扩大树冠,第6年花椒果皮产量可达到1 200 kg/hm2。

Comparative experimental research was conducted on effects of different planting densities of Zan-thoxylum bungeanum in warm half-humid and half-arid climate conditions in Tianshui region.It showed that effects of planting density on surviving rate wasnt’ obvious,but effects of increment and bearing fruit quantity were significant obvious.While building economic forest of Zanthoxylum bungeanum,planting space of 3 m×4 m and 3 m×3 m was adopted,Zanthoxylum bungeanum tree grew quicker and tree shape formed earlieri,t begun to bear fruits in the third year after planting and high yield of Zanthoxylum bungeanum was over 1 350 kg/hm2 in the sixth year after planting.While building ecological economic forest,planting space of 2 m×4 m and 2 m×3 m was adopted,planting density was adjusted by taking out one in two trees in the fourth year.It could add branch quantity,enlarge crown of a tree and seedcase yield of Zanthoxylum bungeanum could achieve 1 200 kg/hm2.