【摘 要】
：
前人研究指出土壤PH与植物锌吸收成负相关[1]。大田试验结果表明,PH高的土壤和石灰性土壤种植水稻施锌有较好的增产效果[2,3]。土壤有效锌临界含量,Cox和Wear (1977)曾报道
【机 构】
：
广西农科院土肥所,广西农科院土肥所,
论文部分内容阅读
前人研究指出土壤PH与植物锌吸收成负相关[1]。大田试验结果表明,PH高的土壤和石灰性土壤种植水稻施锌有较好的增产效果[2,3]。土壤有效锌临界含量,Cox和Wear (1977)曾报道用0.005MDTPA和0.1NHCI的提取量对水稻分别是0.7和1.8ppm[4],但其有效锌临界含量是否随土壤PH而变化,则未见报道。为了探索土壤有效锌临界含量与土壤PH的关系,我们于1982—1985年做了大田试验研究。
Previous studies have shown that soil pH and plant zinc absorption is negatively correlated [1]. Field test results show that the high PH and calcareous soil planting paddy zinc has a better yield-increasing effect [2,3]. Cox and Wear (1977) reported that extraction yields of 0.005MDTPA and 0.1N HCl were 0.7 and 1.8 ppm, respectively, for rice [4], but whether or not the effective zinc critical content varies with soil pH did not See report. In order to explore the relationship between soil available Zn and soil PH, we conducted a field experiment in 1982-1985.
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