论文部分内容阅读
绿肥可以肥田增产,但是,绿肥也会产生消极作用。有时施用绿肥效益不大,甚至影响幼苗生长。这与施用方法及施用时期,耕作措施密切相关。绿肥翻压后,迅速分解产生大量的CO_2,可增加碳素营养。但如果适逢幼苗期,土镶CO_2偏高,影响幼苗呼吸,有时会烂秧。绿肥还会产生许多代谢产物,如香豆素、白当归素、反式肉桂酸、香豆醛等,对作物有毒害作用。栽种绿肥后使土壤微生物相应发生变化。这些微生物能产生毒害其他作物的抗生素。最大的毒物是木霉
Fertilizer green manure can increase production, however, green manure can have a negative effect. Sometimes green manure is not very effective, and even affect seedling growth. This is closely related to the method of application and the period of application and farming practices. Green manure press, the rapid decomposition of a large number of CO 2, can increase carbon nutrition. However, if coincides with the seedling stage, soil setting CO_2 high, affecting seedling respiration, and sometimes rotten seedlings. Green manure will produce many metabolites, such as coumarin, white Angelica, trans-cinnamic acid, coumarin, etc., toxic to crops. After planting green manure to make corresponding changes in soil microorganisms. These microbes produce antibiotics that poison other crops. The biggest poison is Trichoderma