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中国农学通报

中国农学通报 ›› 2005, Vol. 21 ›› Issue (10): 12-12.

所属专题： 玉米

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冀西北高原地区饲用玉米地膜覆盖效应研究

杜 雄,张立峰,杨福存,左启华,杨建肖,边秀举   

  • 出版日期:2005-10-05 发布日期:2005-10-05

The Effect of Plastic-film Mulching on Forage Maize in the Plateau of Northern Hebei Province

Du Xiong, Zhang Lifeng, Yang Fucun, Zuo QiHua, Yang Jianxiao, Bian Xiuju   

  • Online:2005-10-05 Published:2005-10-05

摘要： 通过田间试验，研究了冀西北高原地膜覆盖对饲用玉米田土壤温度水分效应、植株的生物量和养分积累及产量效果，结果表明：7月下旬前0~20cm土壤10d平均温度地膜覆盖比裸地高1.85℃；饲用玉米生长前期保墒作用明显，为玉米随后的快速生长期的高额耗水奠定了物质基础；覆膜促进了饲用玉米对氮磷钾三要素的吸收，使得植株具备了进行高同化能力的营养状态；通过对生物量累积量的Logistic方程拟合，进一步量化了玉米膜地和裸地间生物累积量的差异。覆膜的增温保水作用，使玉米干草产量提高了25.9%，水分利用效率提高了5.0%。研究表明，地膜覆盖饲用玉米为高效利用自然降水和解决当地的饲草短缺问题探索出了一条有效技术途径。

Abstract: The field experiment was conducted to study the effect of film mulching on the soil temperature , water storage and forage maize’s yield, the dynamics of biomass and N, P, K absorption by the forage maize. The result indicated that the soil temperature in cultivated layer of the field with film mulching is higher 1.85℃ than that without film before the last ten-day of July and prevented the evaporation of soil water effectively in the forage maize growth prophase. Under the treatment of film mulching the dry matter yield of forage maize and WUE (water use efficiency) were increased by 25.9% and 4.9% respectively. Forage maize with film mulching was an effective technique to use the rainfall and resolve the problem of forage shortage effectively.