黑龙江省几种主要农业土壤全锰和有效锰含量的研究

本文研究了黑龙江省17个市县的暗棕壤,白浆土、黑土、黑钙土全锰和有效锰含量。结果表明,这4种土壤全锰含量较高,平均含量为843 ppm,但有效锰含量较低,平均含量为18.6ppm。有效锰含量土壤类型间有显著差异:暗棕壤和白浆土含量较高,平均含量为27.3 ppm 和34.3 ppm;黑土平均含量为9.3 ppm;黑钙土平均含量为3.8 ppm。土壤反应状况、水分状况、CaCO_3和有机质含量都对土壤有效锰含量有影响。

STUDY ON THE TOTAL AND AVAILABLE CONTENTS OF SOME MAIN AGRICULTURAL SOIL IN HEILONGJIANG PROVINCE

The total and available contents of manganese of main agricultural soil ofchernozem,dark brown forest soil,planosol and black soil in seventeen citiesand counties of Heilongjiang province were studied in 1987.The four kindsof soil contain higher total contents of manganese with 843ppm on the aver-age.The available contents of manganese of the soil vary greatly.The avai-lable contents of manganese of dark brown forest soil and planosol were high-ger,with 27.3ppm and 43.4ppm respectively.Their strengths of supplyingmanganese were 3.00% and 2.90% which were at high level.Black soil's avai-lable content of manganese was 9.3ppm and its strength of supplying man-ganese was 0.98% with common level.The available content of manganeseof chernozem was 3.8ppm and its strength of supplying manganese was 0.23%with low level,thus manganese fertilizer should be added to the soil.Themain factors affecting the available contents of the soil were pH,CaCO_3 con-tent,water condition and organic matter content.