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甜橙叶片失绿黄化在川南地区日趋严重,面积逐年扩大,是川南甜橙生理落果严重,产量低的原因之一。我们自1983年以来,对该区范围内的锦橙园进行了调查,其失绿黄化原因多种,有因天牛类害虫危害主干、根颈引起叶片失绿黄化,也有因流胶病引起叶片失绿黄化,更多地是因缺乏某种营养元素引起的叶片失绿黄化。为此,我们从营养角度来探索和查明紫色土壤中生长的甜橙叶片缺素失绿原因,以制订有效的矫治措施,提高甜橙产量和品质。
The loss of chlorosis and yellowing of sweet orange leaves is more and more serious in southern Sichuan, and its area has been expanding year by year, which is one of the reasons for the serious physiological drop of sweet orange in southern Sichuan and the low yield. Since 1983, we have conducted a survey of the Jincheng Orange Park in this area. There are many reasons for the loss of greening and yellowing. The pests of the Tian cattle cause harm to the trunk. The root neck causes the leaves to turn green and yellow, Diseases caused by the loss of green leaf yellow, more due to the lack of a nutrient element caused by the loss of green leaves. To this end, we explore and identify from the nutritional point of view of the purple soil growth of orange leaves cause of missing green reasons to develop effective corrective measures to improve the yield and quality of sweet orange.