农村实行家庭联产承包责任制以来,不少农户长期使用同一块秧田,而且用养脱节,导致秧田出现了老化现象:耕作层变浅、通透性变差、土性变冷、土温低、有效养分缺乏,育出的秧苗扎根扶针后出叶缓慢,长势极差,而且耗肥严重,最易感病。对这类老化秧田,可以从以下几个方面进行改良。 Since the implementation of household contract responsibility system in rural areas, many peasants have been using the same seedling for a long period of time, and the use of seedlings has led to the aging of seedling fields: shallow farming layer, poor permeability, cold soil and low soil temperature , The lack of effective nutrients, nurtured seedlings take root after stitches slow leaves, growing very poor, and serious consumption of fertilizers, the most susceptible to disease. For such aging seedling, can be improved from the following aspects.