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选择长江流域油菜产区研究安徽省土壤缺S现状和油菜植株硫营养状况。结果表明,安徽省长江流域油菜产区,土壤有效S平均含量15.31mgkg-1,缺S状况较为严重,缺S土壤所占比例高达63.10%,潜在性缺S土壤所占比例为35.48%。主要土壤类型中灰潮土缺S状况最为严重,有效S不足的土壤所占比例高达80%。油菜植株全S含量为5.08~20.18gkg-1,平均10.02gkg-1。花和叶含S量较高,全S含量平均为11.06gkg-1和11.00gkg-1,茎杆含S量较低,全S平均含量仅8.00gkg-1。油菜花朵和叶片全S含量多在8~16gkg-1,茎杆含S量在6~10gkg-1之间。花、叶、茎全S含量(y)与土壤有效S含量(x)之间呈极显著二次曲线正相关,回归方程分别为y1=3.79782+0.88501x-0.02265x2(R2=0.4156**,F=9.96,n=31),y2=3.6548+0.86280x-0.02111x2(R2=0.26569**,F=5.07),y3=3.78016+0.45330x-0.00981x2(R2=0.34399**,F=7.32)。
Select rapeseed areas in the Yangtze River Basin in Anhui Province to study the status of lack of S and rape plant sulfur nutrition status. The results showed that the available S content was 15.31mgkg-1 in the rapeseed producing area of Yangtze River valley in Anhui Province. The situation of lacking S was more serious. The proportion of missing S soil was as high as 63.10% and the potential lack of S soil was 35.48%. The main soil types are the most severely deficient in gray tide soil, with up to 80% of the available S deficient. All rapeseed S content of 5.08 ~ 20.18gkg-1, with an average of 10.02gkg-1. The content of S in flowers and leaves was higher, the content of total S was 11.06gkg-1 and 11.00gkg-1 on average, and the content of S in stem was lower and the average content of total S was only 8.00gkg-1. All rapeseed flowers and leaves S content more than 8 ~ 16gkg-1, S stem content of 6 ~ 10gkg-1 between. The regression equation of y1 = 3.79782 + 0.88501x-0.02265x2 (R2 = 0.4156 **, y1) was significant positive correlation between the contents of total S in leaves, Y2 = 3.6548 + 0.86280x-0.02111x2 (R2 = 0.26569 **, F = 5.07), y3 = 3.78016 + 0.45330x- 0.00981x2 (R2 = 0.34399 **, F = 7.32) .