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水稻苗床基施锌肥的剂量曾作过探讨,但基施苗床的锌肥和土壤接触时间较长,在碱性土壤中可能被土壤固定较多,影响秧苗的吸收利用。因此,作者近年推荐在秧苗具有较强吸收能力的时候追施锌肥,这对碱性或非碱性土壤都较适合。但追施锌肥的剂量如何掌握,则是这一技术的关键所在。为此,我们于1982～1983年在碱性和非碱性土壤上分别进行了试验。一、试验方法试验在沈阳市苏家屯和彰武县冯家两地进行,前者为草甸水稻土,pH6.50,有效锌含量
Rice seedbed bed based on the amount of zinc fertilizer has been discussed, but the base Shi seedbed zinc fertilizer and soil contact longer, in alkaline soil may be more fixed soil, affecting the absorption and utilization of seedlings. Therefore, in recent years, the authors recommend topdressing zinc fertilizer when the seedlings have strong absorptive capacity, which is suitable for both alkaline and non-alkaline soils. However, how to master the dose of topdressing zinc fertilizer is the key to this technology. For this reason, we conducted experiments on both alkaline and non-alkaline soils from 1982 to 1983. First, the test method Test in Shenyang City, Sujiatun and Zhangwu County Feng Jia two places, the former meadow paddy soil, pH6.50, effective zinc content