continuous cropping

Objective To discuss the internal and external factors'functional mechanism of ginseng continuous cropping obstacle.

目的探讨人参连作障碍的内外在因素作用机制.

Description of long-term continuous cropping decreased the soil enzyme activity.

长期轮作处理下的土壤酶活性均高于连作，说明长期连作降低了土壤酶活性。

The Effects of Continuous Cucumber Cropping on Microbial Communities Structure ⅰ& Based on Quantitative Analysis of Culturable Microbial Population

黄瓜连作对土壤微生物区系的影响Ⅰ&基于可培养微生物种群的数量分析

Effect of continuous cropping on growth and root diseases of strawberry

连作对草莓生长发育和根部病害发生的影响

Influence of Continuous Cropping on Microelements in Tobacco-planting Soil and Tobacco Plant

连作对植烟土壤及烟株中微量元素含量的影响

Therefore diseases and physiological barrier are the main factors of continuous cropping barrie of watermelon.

因此,生理障碍和病理障碍是构成西瓜连作障碍的主导因素.

Bacterial community structure was significantly influenced by continuous cropping system.

同时蔬菜连作对土壤中细菌的群落组成产生影响，这种影响同蔬菜作物种类和连作年限有关。

Study on Correlation between Soil Enzymatic Activity and Soil Fertility in Continuous Cropping Cotton Field

连作棉田土壤酶活性特征及其与土壤养分相关性研究

3, The effects of continuous cropping years on bacterial physiological groups were in the order: the total microbe number of ammoniation> nitrifier> azotobacter and cytophaga in investigated bacteria;

连作对微生物生理类群的影响，在分析的几类有益细菌生理群中，氨化细菌>硝化细菌>固氮菌和纤维素分解菌；

Formation Mechanism and Control Measures of Continuous Cropping Obstacles in Medicinal Plants

药用植物连作障碍的形成机理及其防治

There were significant difference in growth characteristics and productivity in continuous cropping years.

不同连作年限土壤对黄瓜生长特性和产量均有极为显著的影响.