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目前在推广趸秧过程中比较突出的死苗问题,有人认为:床土还原物质的毒害作用是死苗的主要原因,主张从根本上改换床土(指新鲜塘泥);有人认为低温阴雨,温差过大是引起死苗的主要原因,主张以水调温,防止死苗等等,1973年,我们为了探讨趸秧死苗的规律,就不同场地和床土进行了试验,现将试验初步结果整理如下:
Currently in the process of promoting the bulk seedling more prominent dead seedlings problem, some people think: bed poisoning is the main cause of dead seedlings, advocating a fundamental change bed soil (referring to fresh pond mud); some people think that the cold and rainy, Too much temperature difference is the main reason causing dead seedlings, advocating water temperature control, preventing dead seedlings and so on. In 1973, in order to discuss the law of seedling seedlings, we carried out experiments on different sites and bed soil. The results are organized as follows: