盐渍化土壤花生钼铁稀土配合施用增产效应的研究

黄淮海平原中低产地区浅层咸水型盐渍化土壤,由于有效钼及有效铁含量较少,对花生采用钼拌种再根外追施硫酸亚铁取得了显著的增产效果(比对照增产达48％左右)。硫酸亚铁喷施浓度与花生荚果产量间存在着非线性回归关系。在1％硫酸亚铁浓度范围内,产量与浓度呈显著正相关(r=0.9878);但浓度超过1％以上时,则两者呈显著负相关。根外追铁的最适浓度在1％左右。稀土元素对花生也有极明显的增产效果。

A EXPLORATIVE STUDY ON HIGHING YIELD OF PEANUT APPLYING Mo AND Fe FERLILIZERS IN SALTING SOIL

The effective Mo and Fe in sating soil of Huang-Huai-Hai plain were less.The significant incresing yield effect have been gained by with seeds dre-ssing Mo and additional ferrous sulphate in peanut plants,peanut increa-sed yield about 48% than ck.The nonlinear regression relationships showed between concentration of ferrous sulphate and peanut yield.The peanut yield and ferrous sulphate concentration showed significant positive-correlation(r=0.9898)in 1% concentration range,but the voth appear negative correlation if concentration was over 1 %.The optimum concentration of additional Fe2 is about 1%.