| 摘要: |
| [目的]明确陕西杨凌大棚油桃出现黄化现象的原因,通过对喷施铁制剂矫正效果的比较,筛选出理想的铁制剂用于果树缺铁黄化病防治.[方法]以陕西杨凌穆家寨发生黄化的大棚油桃为研究对象,采用土壤诊断和叶片诊断等方法确定黄化病的原因,并以清水为对照喷施不同铁制剂(FeSO4、EDTA-Fe、柠檬酸-Fe、腐殖酸-Fe和复合氨基酸-Fe)进行矫治,检测其对油桃叶片叶绿素和有效铁含量及光合作用指标的影响.[结果]油桃黄化的原因是缺铁;不同的铁制剂对油桃黄化的矫治效果有差异,其中以EDTA-Fe、柠檬酸-Fe 和复合氨基酸-Fe的处理效果最好,显著提高了油桃叶片的叶绿素和有效铁含量,提高了油桃的净光合速率、单叶水分利用效率和RuBP羧化酶效率.[结论]柠檬酸- Fe和复合氨基酸- Fe是矫治油桃缺铁黄化经济的铁制剂. |
| 关键词: 大棚油桃 黄化 诊断与矫治 铁制剂 |
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| 基金项目:西北农林科技大学青年学术骨干支持计划项目（01140305）；西北农林科技大学专项（08080251） |
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| Diagnosis and remedy of the nectarine chlorosis in greenhouse |
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| Abstract: |
| 【Objective】 The study was to find the reasons for the greenhouse nectarine chlorosis in Yangling and select better iron preparations for remedying it.【Method】 Soil and plant diagnosis and spraying diagnosis were used in the greenhouse nectarine in Yangling Shaanxi.The remedy effects of different iron preparations were compared by determining the content of Chlorophyll and available iron and photosynthetic rate of nectarine leaves.【Result】 The results showed that iron deficiency was the reason for the greenhouse nectarine chlorosis in Yangling.The effects of the different iron preparations were significantly different.The EDTA-Fe,citrate-Fe and the compound amino acid-Fe treatment were much better than others.These iron preparations significantly increased the net photosynthetic rate,leaf water use efficiency and RuBP carboxylase efficiency of the nectarine leaves. 【Conclusion】 The citrate-Fe and the compound amino acid-Fe are good iron preparations for correcting nectarine chlorosis. |
| Key words: greenhouse nectarine chlorosis diagnosis and correction iron preparation |
