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土壤ｐＨ对华南双季稻旱育秧素质的影响试验结果表明：土壤ｐＨ不同与水稻早籼高产良种旱育秧苗的生长发育有关，ｐＨ６．２—８．４是早季稻旱秧适宜的土壤酸碱度范围，当ｐＨ高达８．８时百苗干重明显降低，ｐＨ低至５．６时根系活力显著下降，ｐＨ＜４．９时则叶片、叶鞘、根系的生长发育严重受阻。指出在华南双季稻区早稻育秧时，对于偏酸性的土壤可不必再用酸性物质调节ｐＨ值，而可用碱性物质适当提高ｐＨ值，使早稻旱育秧苗床处于适宜的ｐＨ范围内，从而培育出壮秧。
Effect of soil pH on quality of dry nursery seedlings of double cropping rice in South China The results showed that the different soil pH was related to the growth and development of dry seedbed seedlings of high yielding indica rice, pH6.2-8.4 was the suitable soil pH The dry weight of the seedling decreased obviously when the pH was as high as 8.8. The root activity decreased significantly when the pH was lower than 5.6. The growth and development of the leaf, sheath and root were severely blocked when the pH was lower than 4.9. It is pointed out that it is not necessary to adjust the pH value with acidic substances in the soils with acidic soil during the early rice growing season in southern China. However, alkaline substances can be used to raise the pH value properly so that the seedling beds of early rice dry seedlings are in suitable pH range so as to cultivate Out strong seedlings.