目的探讨人参连作障碍的内外在因素作用机制。
Objective To discuss the internal and external factors' functional mechanism of ginseng continuous cropping obstacle.
许多研究表明根系分泌物与植物残体是连作障碍的关键问题之一。
Root exudates and plant remains in soils were concerned as one of the key reasons for these problems in other crops.
表明施入黄孢原毛平革菌剂对黄瓜连作障碍的解除具有一定的效果。
It was suggested that inoculation of P. chrysosporium had definite effect in overcoming the continuous cropping obstacle of cucumber.
本研究为合理进行连作大豆锰营养调控，减轻连作障碍提供了科学依据。
The scientific grounds for reasonable regulating Mn nutrition of soybean continuous cropping and alleviating continuous cropping barriers are recommended by the study.
摘要：由于瓜类连作障碍问题越来越突出，蔬菜嫁接技术受到人们的重视。
Abstract: more and more prominent melon cropping obstacles, vegetable grafting technique attention has been paid.
因而，经过黑籽南瓜嫁接以后的黄瓜，化感作用仍然是其连作障碍中的主要因子之一。
This inhibitory effect also have a direct correlation with the concentration of secretion of grafted cucumber root.
将as818菌剂接种于盆栽草莓的根系，分析了AS818菌剂对草莓连作障碍的影响。
The effects of AS818 on replant disease of strawberry were studied through inoculating strawberry with AS818 in pot cultures.
近年来，科技工作者对大豆连作障碍机理进行了广泛研究，得出的结论不尽一致，尚有争论。
The researches have been extensively studying the barrier mechanism caused by continuous soybean cropping in the past few years. But the conclusions were incompletely consistent with each other.
连作条件下根系分泌物的逐年积累产生的自毒效应，可能就是百合连作障碍产生的重要原因。
Tissue culture methods were used to simulate the allelopathy effect of lily root exudates under sterilized conditions.
在利益的驱动下，有的在同一块地连续种植同种或同科作物，从而导致这些田块产生连作障碍；
The fact that crops of the same species or the same families continuously planted in the same field will cause more obstacles for crop sequential cultivation.
在还没有形成连作障碍的土壤上长期施用本微生物有机肥料能在很大程度上防止连作烟草黑胫病的发生。
The microbial organic fertilizer can greatly prevent the continuous cropping tobacco black shank if being applied to soil without continuous cropping obstacles for a long time.
草莓是一种营养丰富、经济价值较高的水果，但连作障碍使草莓生长发育不良，产量与品质下降，而造成连作障碍的因素种类繁多，极其复杂。
Strawberry is a kind of nutritious fruit with high economic value, but the growth of strawberry was inhibited by the continuous cropping obstacle, with the yield and the quality being decreased.
限制温室蔬菜生长的土壤障碍因子是：养分失衡、盐渍化、连作等。
The obstacles of soil environmental to vegetables growth in greenhouse were the soil nutrient out of balance, the soil salinization and culture without rotation etc.
限制温室蔬菜生长的土壤障碍因子是：养分失衡、盐渍化、连作等。
The obstacles of soil environmental to vegetables growth in greenhouse were the soil nutrient out of balance, the soil salinization and culture without rotation etc.
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