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甘蔗被认为是“忌氯作物”的记载散见于一般文献中,因此,长期来氯化钾在甘蔗上的施用受到限制。据仙游县第二次土壤普查资料表明,蔗区87%的土壤严重缺钾(速效钾含量低于80ppm),极需施用化学钾肥来补充,然而当前市场上销售的钾肥多数是氯化钾。为了明确氯化钾在甘蔗生产上施用效果,为扩大施用范围,降低施肥成本提供科学依据,我们进行了两年的试验,现将试验结果整理如下:
The documented suggestion that sugarcane is considered to be a “chlorine-free crop” is found in the general literature and, therefore, the application of potassium chloride to sugarcane has been limited in the long term. According to Xianyou County, the second soil census data show that 87% of the soil in sugarcane area is seriously deficient in potassium (the available potassium content is less than 80ppm), and it is very necessary to use chemical potash to supplement. However, most potassium currently on the market is potassium chloride . In order to clarify the application of potassium chloride in the production of sugar cane to expand the scope of application, to provide a scientific basis for reducing fertilizer costs, we conducted a two-year trial, the test results are summarized as follows: