不同施肥处理对湿加松早期生长及感病指数的影响

调查了福建省德化葛坑国有林场4种不同施肥处理后,2、3、4年生湿加松树高、胸（地）径和病害指数变化情况。结果表明,（1）不同施肥处理对湿加松早期树高、胸（地）径和松感病指数均产生显著影响,各生长年度树高、胸（地）径生长大小依次为：施氮磷钾复合肥与硼砂〉施氮磷肥与硼砂〉施氮磷肥〉对照（不施肥）,而感病指数大小则为：对照（...

Effects of different fertilizing treatments on early growth and disease-infected indices of Slash×Honduras Caribbean pine hybrids

Dynamics of the height,diameter at breast height,ground diameter,and disease-infected indices of 2,3 and 4 years old Slash×Honduras Caribbean pine hybrids in 4 different fertilizing treatments were investigated in Gekeng National Forest,Dehua County,Fujian Province.（1）The effects of different fertilizing treatments on the height,diameter at breast height,ground diameter and disease-infected indices at early growth stages of Slash×Honduras Caribbean pine hybrids were significant.In the years of growth,the sequence of growing height,diameter at breast height and ground diameter was applying NPK compound fertilizer and boraxapplying NP fertilizer and boraxapplying NP fertilizerthe control（no fertilizer）,meanwhile the sequence of disease-infected indices was the control（no fertilizer）applying NP fertilizerapplying NP fertilizer and boraxapplying NPK compound fertilizer and borax.（2）The disease-infected indices were significantly negatively correlated with the height,diameter at breast height and ground diameter in Slash×Honduras Caribbean pine hybrids.Therefore,proper fertilizing management could promote the growth of height,diameter at breast height and ground diameter and improve the disease resistance at early growing stages of Slash×Honduras Caribbean pine hybrids.