摘要
连续4 a对山茱萸低产林施肥试验表明:施尿素结合喷施磷酸二氢钾、施尿素结合喷施三十烷醇和覆青草3种处理,4 a平均株产3.09kg,比施肥前增加3.63倍,比对照增加103.51％;大小年变化幅度减小;单果重、结果枝比例、单位结果枝结果数、有花枝座果率、新梢粗度和长度均有提高。
A fertilization test to low-yield forests of common macrocarpium for 4 years showed that the average yield of single tree by appling urea with potassium acid phosphate sprayed was 3.69 kg/a-5.47 times as high as by applying no fertilizers, increasing by 142.76% compared with the contrast; that the average yield of single tree by applying urea with mel-issyl alcohol sprayed was 2.84 kg/a-1.90 times as high as by applying no fertilizers, increasing by 86.84% compared with the contrast; that the average yield of single tree by covering grass was 2.75 kg/a-3.51 times as high as by applying nothing, increasing by 80.92% compared with the contrast, and the variation range between high-yield and low-yield years was narrowed. The average coefficient of variation for yields of 3 fertilizer-applying treatments was 43.43%, descreasing by 52.26% compared with the contrast. Single fruit weight, percentage of fruiting shoot, fruit number/fruiting shoot, percentage of fertile fruit, both thickness and length of new groths increased also.
出处
《浙江林学院学报》
CSCD
1992年第3期360-363,共4页
Journal of Zhejiang Forestry College
关键词
山茱萸
施肥
分析
common macrocarpium (Macrocarpium officinalis Nakai)
forest tree fertilization
yield
