摘要
本文报道了白藤苗期无土栽培营养配方的选择,N、P、K元素的最佳营养配比,营养元素缺乏的症状及对生长影响的研究结果。结果表明,1/2Machlis营养液,pH 5.0时较适合藤苗培养,其中N、P、K以90×10^(-6)(ppm):40×10^(-6)(ppm):160×10^(-6)(ppm)配比时更有利于藤苗生长。藤苗对缺素反应迟缓,但经6个月培养仍呈现缺素症。培养期间,缺素对植株地上部分生长影响较大,而对根系生长影响较小,从而显著降低了地上部分与根的鲜重比值。
This paper deals with the choice of nutrient solutions for the solution culture of the seedlings of Calamus tetradactylus, the best ratio of N P K in nutrient solution for the growth of the seedlings, the symptoms of nutrition deficiency and the effects of nutrition deficiency on the growth of the seedling. The results showed that 1/2 Machlis nutrient solution at pH 5.0 was quite suitable for the solution culture of the seedling; the ratio of 90×10-6(ppm) N:40×10-6(ppm)P:160×10-6(ppm)K was the best;the symptoms of nutrition deficiency appeared on the seedling very slowly, but after 6 months of solution culture some symptoms could be seen. During the solution culture, nutrition deficiency affected the growth of the above-ground more seriously than that of under-ground,therefore the rate of fresh weight of the above-ground to under-ground decreased.
出处
《林业科学研究》
CSCD
北大核心
1992年第4期387-393,共7页
Forest Research
基金
加拿大国际发展研究中心(IDRC)资助项目
关键词
白藤
营养液
苗期
氮
磷
Calamus tetradactylus nutrient solution ratio of N P K growth deficiency symptoms
