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本工作发现山地红壤地区柑桔因患缺硼症使幼果发生“内坏”而大量脱落,喷施硼肥极大地提高着果率和果实产量,并显著地改善了果实品质。土壤施用硼渣或肿柄菊(Tithonia diversifolia A.Grag)绿肥有益于改善柑桔的硼素营养。硼肥可提高柑桔叶片的光合强度,降底叶的含糖量和含水量,提高叶片的蒸腾强度,加速糖在体内的运转。尤其重要的是硼肥降低了柑桔幼果及未成熟果实的果柄离层区纤维素酶活性,抑制了离层的形成,从而降低了不正常的生理落果。本文讨论了硼肥对提高柑桔产量的重要意义,增产的生理机制以及合理施用硼肥等问题。
The results showed that the citrus in mountainous red soil area had a large amount of off - fruit due to boron deficiency, and spraying boron fertilizer greatly improved the fruit yield and fruit yield and significantly improved the fruit quality. Soil application of boron slag or Tithonia diversifolia A. Grag green manure is beneficial for improving boron nutrition in citrus. Boron fertilizer can improve the photosynthetic intensity of citrus leaves, reduce the sugar content and water content of the bottom leaves, improve the transpiration strength of leaves and accelerate the operation of sugar in the body. It is especially important that boron fertilizers reduce the cellulase activity in the foraminifera of young and unripe citrus fruits, inhibit the formation of the delamination and reduce the abnormal physiological decapitation. This paper discussed the importance of boron fertilizer to improve the yield of citrus, the physiological mechanism of increasing yield and the reasonable application of boron fertilizer.