测土配方施肥对桉树生长量的影响

Effect of Soil Testing and Formula Fertilization on the Growth of Eucalyptus Trees

为探讨测土配方施肥技术与常规施肥措施对桉树生长量影响的差异,为今后测土配方施肥技术在桉树种植中提供参考。试验地选取在广西壮族自治区国有博白林场射广分场射广工区4林班4.1小班内进行,用随机区组设计,选择立地条件相一致的地块,根据3种不同的施肥措施进行随机分组,分别为A、B、C组,其中A组采用测土配方施肥措施,B组采用常规施肥措施,C组为空白对照组,不采取任何施肥措施,3个处理,3次重复,并对各试验地桉树进行4次树高、胸径等相关指标调查。结果表明:根据A、B、C三组的平均单株材积换算成每667 m 2蓄积量,其中A组比B组的每667 m 2蓄积量增加12.2%,比不施肥的C组增加39.4%。可见与常规的施肥措施相比,采用测土配方施肥的方式能够有效提高桉树的蓄积量,提高桉树生产产量和经济效益。

The purpose is to explore the differences in the effects of soil testing formula fertilization technology and conventional fertilization measures on the growth of Eucalyptus trees,in order to provide reference for future soil testing formula fertilization technology in Eucalyptus planting.The experimental site was selected in Group 4.1,Forest Class 4,Sheguang Work Area,Sheguang Branch of the State-owned Bobai Forest Farm in Guangxi Zhuang Autonomous Region.A random block design was used to select plots with consistent site conditions.Three different fertilization measures were randomly divided into groups:A,B,and C.Group A adopted soil testing formula fertilization measures;Group B adopted conventional fertilization measures,and Group C was a blank control group,without any fertilization measures.Three treatments were used;Three replicates were conducted and four surveys were conducted on Eucalyptus trees in each experimental site,including tree height,diameter at breast height,and other related indicators.According to the average individual plant volume of groups A,B,and C,it was converted into the volume per 667 m 2.Among them,the volume per 667 m 2 of group A increased by 12.2%compared to group B,and increased by 39.4%compared to group C without fertilization.Compared with conventional fertilization measures,using soil testing formula fertilization can effectively increase the storage capacity of Eucalyptus trees as well as improve their production yield and economic benefits.