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分别在湖北省柑桔主产区通山、宜昌和秭归进行为期 4年的柑桔施用硫酸钾 (SOP)和氯化钾 (MOP)试验。结果表明 ,施钾能有效地提高叶绿素值、促进树体生长、提高果实产量和改善品质。SOP和MOP对柑桔产量的影响在三个试验点表现不尽相同 ,其中通山、宜昌点MOP增产效果高于SOP ,而在秭归点则相反 ,这种差异与土壤钾、硫含量和施用的其他肥料品种有关。两种品种的钾肥均能改善果实品质 ,SOP作用略高于MOP。连续 4年施用MOP未见对柑桔生长、产量和品质产生不良影响。
Four years of application of SOP and MOP in citrus were conducted in Tongshan, Yichang and Zigui of the main orange producing areas in Hubei Province. The results showed that applying K could effectively increase chlorophyll value, promote tree growth, increase fruit yield and improve quality. The effects of SOP and MOP on the yield of citrus were different in three test sites. The yield of MOP in Tongshan and Yichang was higher than that in SOP, Other fertilizer varieties related. Both varieties of potash can improve fruit quality, SOP slightly higher than MOP. Four consecutive years of application of MOP did not affect citrus growth, yield and quality.