Effect and Rational Dosage of Application Medium Trace Element on Quality and Yield of High Quality Soybean
Field trail were conducted to investigate the effect and rational dosage of medium trace element on quality and yield of soybean with high oil and high protein in black soil area of central Jilin province from 2001 to 2007. The yield of high oil soybean was significantly increased 9.1% ～ 16. 6% with the application of S, Mg, B and Mo fertilizer. The yield of high protein soybean had an increasing trend with the application of Mg and Cu fertilizer. The oil content of high oil soybean increased 0.21% ～ 0. 35% with the application of medium trace element such as S, Mg, Cu, Zn, B and Mn. The protein content of high protein soybean increased 0.15%～0.44% with the application of Zn and Mn fertilizer. Rational dosage of Zn (ZnSO4) and Mn (MnSO4) was 15 and 15 ～30 kg · hm-2 for both high oil and high protein soybean cultivars. Rational dosage of S fertilizer ( Sulfer95) was 45 and 15 ～ 30 kg · hm-2 for high oil and high protein soybean cultivars, respectively.
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