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本文报道了淮北平原砂姜黑土区小麦氮锌配施效应及增产机理的研究。结果表明 ,在缺锌的砂姜黑土上 ,氮锌配合施用具有显著的增产效果。盆栽小麦增产1 0 2 %～ 1 8 8% ;大田小麦平均增产 9 76 %～ 1 6 6 %。氮锌配合施用显著提高了土壤有效锌和速效氮含量水平 ,促进了小麦对氮锌的吸收 ,有效提高了植株氮锌含量 ,土壤水解氮含量增加了 9 1 3%～ 2 1 2 % ;有效锌含量提高了 32 3%～ 6 4 5 % ,小麦氮锌含量分别升高 5 2 0 %～ 1 3 0 %和 1 8 9%～ 36 7% ,氮和锌积累量分别增加2 2 2 %～ 49 7%和 40 2 %～ 6 8 2 %。说明在本试验条件下适当的氮锌配施对小麦生长发育具有明显的促进作用
This paper reports the effect of nitrogen and zinc in wheat in the lime concretion area of Huaibei Plain and the mechanism of yield increase. The results showed that the combination of nitrogen and zinc had significant yield increase on zinc-deficient sago turf black soil. The yield of potted wheat increased from 102% to 188%. The average yield of field wheat increased from 9 76% to 166%. The combination of nitrogen and zinc significantly increased the contents of available Zn and available N in soil, promoted the absorption of nitrogen and zinc in wheat, increased the content of nitrogen and zinc in plants, and the content of soil hydrolyzed nitrogen increased by 9 13% ~ 21 2%. Zinc content increased 32.3% ~ 64.5%, nitrogen and zinc content in wheat increased 52.0% ~ 130.0% and 1.89% ~ 36.7%, and nitrogen and zinc accumulation increased by 22.2% ~ 49 7% and 40 2% ~ 68 82%. The results showed that the suitable nitrogen and zinc fertilizers promoted the growth and development of wheat under the conditions of this experiment