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我们自1981年以来,对南方各地如广东、广西、湖南、四川、安徽等省区进行了水稻考察,发现水稻土既有严重缺锰地块,更有大面积中度缺锰土壤。为此,我们选安徽省安庆地区10个县1个市郊的土壤进行锰丰缺状况和转移特点的研究。水稻缺锰症状水稻早期缺锰表现为叶色淡,株高较正常植株矮10厘米,返青、分蘖较迟,每穴早期分蘖较正常植株少3.6—4.84个。严重缺锰时叶脉间断失绿,并出现棕褐色小斑点,
Since 1981, we have conducted paddy surveys in various provinces in the south such as Guangdong, Guangxi, Hunan, Sichuan and Anhui Provinces. We found that paddy soils have both serious manganese-deficiency landforms and a large area of moderately manganese-deficient soils. To this end, we selected the soil in an outskirts of 10 counties in Anqing, Anhui Province to study the status of manganese abundance and its shifting characteristics. Rice lack of manganese symptoms of early rice showed leaf color light, plant height shorter than the normal plant 10 cm, turning green, late tillering, early each tiller tillers than the normal plants less 3.6-4.84. Serious lack of manganese veins intermittently lost green, and the emergence of small brown spots,