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土壤调理剂对设施菜田土壤及作物生产的影响

Chinese Agricultural Science Bulletin(2015)

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Abstract
为了明确土壤调理剂在改良设施土壤理化性状及增加作物产量方面的作用,确定土壤调理剂产品的最佳施用量,便于在农业生产中的应用推广,笔者研究了土壤调理剂对设施菜田(以北京市房山区为例)土壤性状及农作物生产的影响.结果表明:施用土壤调理剂对提高设施土壤田间持水量、土壤阳离子交换量及番茄产量作用明显,土壤调理剂施用量与土壤田间持水量、阳离子交换量及番茄产量的关系分别可以用方程y=-8×10-5x2+ 0.0329x+ 27.34(R2=0.958),y=-0.0004x2+0.0639x+ 16.39(R2=0.9344)和y=-0.004 1x++0.5155x+77.725(R2=0.9877)拟合.土壤调理剂施用量60~75 L/hm2对改善土壤理化性状、增加番茄产量最优.
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Key words
soil,facility vegetable field,crop production,soil conditioner
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