摘要
本文报道了在辽阳地区土壤条件下,用化学药剂防治松苗立枯病(Rhizoctonia solaniKühn,Fusarium sp.)效果不明显、而施入森林腐殖土防治该病取得了极显著效果。方法是将森林腐殖土按每平方米苗床10千克用量与苗床10公分表上掺拌均匀。防病原因是:1.腐殖土中含有大量菌根菌,该菌与苗根形成菌根,有利于水分及无机盐类的吸收、利用。菌根菌又有抑制立枯病菌的作用;2.增加了土壤中有机质及N、P、K的含量,苗木生长健壮,提高了抗病能力。
Chemicals appear not effective for control of larch seedling damping-off (Rhizoctonia solaniKühn and Fusarium sp.) in the Liaoyang District conditions,while forest humus givessignificant results in controlling the disease. The method involves an optimum humus dosage of 10Kg/m^2 and evenly mixing it with thesurface soil of 10 cm depth. The reasons of the effectiveness are:1.The forest humus has a large amount of mycorrhizaefungi which benefit water and nutrients absorption of the plant and play a antagonism role to thedamping'—off pathogen.2.Increase the organic matter and N,P,K contents in the soil,promote vigourous growth of seedlings and therefore increase their resistant ability todisesses.
出处
《植物保护学报》
CAS
CSCD
北大核心
1989年第1期55-59,共5页
Journal of Plant Protection
关键词
森林
腐殖土
落叶松
幼苗
立枯病
forest humus
Rhizoctonia solani
Fusarium sp.
