| 王瑞东,姜存仓,刘桂东,刘磊超,彭抒昂,刘秀文.常规与缓释硼肥连施及停施对脐橙硼营养的影响动态[J].中国南方果树,2014,43(2): |
| 常规与缓释硼肥连施及停施对脐橙硼营养的影响动态 |
| Dynamic effect on B nutrition of Navel orange with continuous conventional and slow-release B fertilizer and stopping fertilizer |
| 投稿时间：2013-06-19 修订日期：2014-02-20 |
| DOI： |
| 中文关键词: 纽荷尔脐橙 缓释硼肥 叶片硼含量 |
| 英文关键词:Newhall navel orange Slow release boron fertilizer Boron content |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 中文摘要: |
| 为探讨不同硼肥对纽荷尔脐橙叶片硼效应的影响，采用大田试验于2007年与2008年连续两年施用常规硼肥(B)和缓释硼肥(UB)，后停施，并于2008-2011连续四年监测脐橙叶片硼含量的动态变化。试验结果为：施用两种硼肥均可显著提高脐橙叶片硼含量；施肥期间B处理叶片硼含量显著高于UB处理；施B连续两年，老叶出现硼过量积累现象，而UB未出现；停施硼肥后两处理叶片硼含量均下降，老叶中硼含量均低于新叶，UB处理下降幅度小于施B处理；两种不同硼肥均有一定的后效，均可维持停施硼肥后第二年春梢叶硼含量处于正常范围，但UB可维持停施硼肥第二年后新抽秋梢叶硼含量处于正常水平，而施B新抽秋梢叶硼含量接近缺硼临界值。因而，施用硼肥能够明显改善纽荷尔脐橙叶片硼营养状况，且不同种类的硼肥其营养效应有较大差异。 |
| 英文摘要: |
| To determine the suitable boron fertilization technology on Newhall navel orange in south of Jiangxi, a field experiment was conducted for 4 years (2007-2011) to investigate the effect of conventional boron fertilizer (B) and slow-release boron fertilizer (UB) on Newhall navel orange with no boron fertilizer treatment as control. B and UB were continuously applied in the first two years and then stopped. Results showed that boron content in leaves of Newhall navel orange was significantly increased with applying two kinds of boron fertilizers. Leaf boron content was higher with B than UB during fertilization, and it was higher in new leaves than that in the old ones. Excessive accumulation of boron in old leaves appeared when fertilized with B continuously for two years, which did not happen with UB. After stopping fertilizing, boron content in leaves decreased both in B and UB treatments, especially in the new leaves. This study revealed that both conventional boron fertilizer and slow-release boron fertilizer had aftereffect and could maintain the leaf boron content of the spring shoots in the normal range in the second year after stopping fertilizing, however, applied with UB also could maintain the leaf boron content of fall shoots in a normal level whereas it was close to the boron deficiency threshold with B. This study provided a possible B fertilization technology on Newhall navel orange in south of Jiangxi. |
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