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土壤PH对作物发育的影响曾作过广泛研究。业已证明,对酸性土壤施钙(如石灰石)可促进西瓜生产。但是涉及到土壤酸性对西瓜组织浓度影响的研究,作物中潜在Mn的积累还不曾提出。该研究旨在调查土壤酸性对西瓜叶组织中Ca、AI和Mn浓度及其对作物生长发育的影响。材料和方法研究于1981～1982年在路易斯安那州哈蒙德东南部园艺试验站钙砂土上进行。试验设计分区以土壤陵性为主区,以Calhoun Gnay和DiXielee及N的比率组成次区。N的比率每公顷112和224公斤,来之NH_4NO_3,
The effect of soil pH on crop development has been extensively studied. It has been demonstrated that the application of calcium (such as limestone) to acidic soils can promote watermelon production. However, studies on the effect of soil acidity on watermelon tissue concentration have not been proposed yet. The aim of this study was to investigate the effects of soil acidity on Ca, AI and Mn concentrations in watermelon leaf tissue and their effects on crop growth and development. Materials and methods The study was conducted on calcareous soil from 1981 to 1982 at the Horticultural Experimental Station southeast of Hammond, Louisiana. The experimental design zoning is dominated by soil trituration and is subdivided by the ratios of Calhoun Gnay and DiXielee and N. N ratio of 112 and 224 kg per hectare, to NH_4NO_3,