土壤添加物对外源化感物质处理下番茄生长的影响

摘要

通过田间随机区组栽培番茄的方式，向含有外源化感物质的土壤中添加稻壳和石灰氮，研究稻壳和石灰氮对外源化感物质毒害的缓解作用，为寻找高效合理的措施防治连作障碍的发生提供参考。结果表明：向含有外源化感物质的土壤中添加稻壳或石灰氮后，番茄植株的长势以及干物质积累明显高于未添加的对照组，说明稻壳和石灰氮具有缓解化感物质毒害的作用。试验还表明施入稻壳5 kg/m2或石灰氮100 g/m2缓解效果较为明显。%The rice husk and lime nitrogen were added in soil which was containing exogenous allelochenicals to investigate the alleviative effect of different dosages on the toxicity of exogenous allelochemicals through cultivating tomato by randomized block in field,in order to provide a reference for finding efficient and reasonable measures to control the occurrence of continuous cropping obstacle.The main results were shown as follows,the tomato plant growth and amount of dry matter that were apparently higher than the control group after added rice husk or lime nitrogen to the soil which containing exogenous allelochemicals.This indicated that rice husk and lime nitrogen could relieve allelopathic toxic action.And the alleviation of rice husk 5 kg/m2 or lime nitrogen 100 g/m2 was more efficient.