碳酸盐草甸土玉米配合施用磷锌效应研究

Study on the effect of using phosphorus and zinc on maize in Carbonate meadow soil

通过两年试验研究 ,揭示了东北北部碳酸盐草甸土磷、锌化学特征与玉米生长发育关系及磷、锌肥施用技术。在碳酸盐草甸土上 ,施磷可以明显提高土壤速效磷的含量 ,但同时抑制了土壤锌的有效性 ,使有效锌减少了 2 2 7%～ 4 5 5 % ;施锌可以明显提高土壤速效锌的含量 ,但同时抑制了土壤磷的有效性 ,使有效磷减少了 11 3%～ 17 9%。施磷可以明显提高玉米植株磷的含量 ,但同时抑制了玉米植株对土壤锌的吸收 ,植株锌含量减少了 74 1%～ 92 4 % ;施锌可以明显提高玉米植株锌的含量和产量 ,产量可以提高 19 68% ,但同时抑制了玉米植株对土壤磷的吸收 ,使植株磷含量减少了 2 6 0 %～ 33 1%。适宜的磷、锌配施可以提高玉米产量 ,增产的幅度为 9 32 %～ 31 5 3% ,磷、锌在土壤和玉米植株体内都有拮抗作用。表 9,参 7。

Through two years experiment, the result shows that the relation between the chemical characters of Carbonate meadow soil in the north of the Northeast and the growing of maize and the applying technology of phosphorus and zinc The phosphorus fertilizer can clearly heighten the content of available phosphorus in soil, but meanwhile it restrains the availability of zinc The available zinc can reduce by 22 7%-45 5% Applying zinc can obviously heighten the content of available zinc in the soil, but at the same time it also reduce the availability of the phosphorus in the soil The available zinc can reduce by 11 3%-17 9% Applying phosphorus can clearly heighten the content of phosphorus in the plant of maize, but meanwhile restrain the abstraction of zinc by the maize plant The content of zinc can reduce by 74 1%-92 4% in the plant Using zinc may obviously heighten the content of zinc in the plant and the yield, the yield can heighten by 19 68%, but meanwhile it restrains the abstraction of phosphorus by the maize plant The content of phosphorus can reduce by 26 0%-33 1% in the plant The optional radio of phosphorus and zinc can heighten the maize yield The range of increasing yield is about 9 32%-31 53% Phosphorus and zinc resist each other in the soil and maize plant