石灰性冲积水稻土施用锌肥的长期效应

• 作 者: 王振文 邓开宇 谢振翅
• 机 构: 湖北省农业科学院土肥所,湖北省农业科学院土肥所,湖北省农业科学院土肥所
• 出 处: 湖北农业科学
• 发表日期: 1983年04期
• 关键词: 锌肥 石灰性 早稻 水稻土 示踪测定 长期效应 增产效果 渗漏损失 晚稻 水稻总产量

我们在江汉平原石灰性冲积水稻土上施用锌肥来防治早稻“坐蔸”时发现,锌肥对早稻有显著的增产效果,但早稻对锌肥的利用率很低。示踪测定,对硫酸锌的利用率,当季早稻为1.2—3.5％,后作晚稻为0.6—1.5％;而渗漏损失也很小。可见大量锌肥仍残留在土壤中。这些残留的锌可否被后季作物所利用?为此,从1978年起设置了锌肥后效试验。同时,对长期施用锌肥后,作物对锌、磷、锰、铜等元素的吸收、分配与累积的影响,进行了研究。

When we applied Zinc fertilizer on calcareous alluvial paddy soil in Jianghan Plain to prevent and control early rice “Zuozuo”, we found that Zinc fertilizer had a significant yield increase effect on early rice, but the utilization rate of Zinc fertilizer in early rice was very low. Tracer determination, the utilization of zinc sulfate, the season of early rice is 1.2-3.5%, followed by late rice is 0.6-1.5%; and leakage loss is also small. It can be seen that a large amount of zinc fertilizer still remains in the soil. These residual zinc can be used by the following crops? To this end, from 1978 onwards after the set zinc fertilizer test. At the same time, the effects of long-term application of zinc fertilizer on the absorption, distribution and accumulation of zinc, phosphorus, manganese, copper and other elements were studied.