在密集栽培下优化乔乔巴的应用.
Arnon Dag1, Shamir Badichi1,2, Alon Ben-Gal1
1Gilat Research Center, Agricultural Research Organization, Volcani Institute, Rishon LeTsiyon 8528000, Israel.
Plants (Basel, Switzerland)
|September 9, 2023
概括
对于密集种植的柔果,建议使用150公斤Nha-1. 叶子分析识别了 (N) 缺乏,而土壤采样检测了过量的N,优化了施肥.
科学领域:
- 农业科学 农业科学
- 植物营养 植物营养
- 土壤科学 土壤科学
背景情况:
- 乔乔巴 (Simmondsia chinensis) 种植缺乏全面的 (N) 需求数据.
- 密集的乔乔巴种植需要精确的营养管理,以获得最佳的产量和环境保护.
研究的目的:
- 为了确定在密集管理下成熟的乔乔巴植物的最佳 (N) 应用率.
- 评估不同含量对植物营养,生长,生产率和土壤酸盐积累的影响.
主要方法:
- 一项为期6年的实地研究通过地下滴灌方式应用了5个N速率 (50500公斤Nha-1).
- 在整个生长季节分析了叶子和土壤样本,以监测营养状况和酸盐水平.
- 测量了植物生长和生产率,以与N应用率相关.
主要成果:
- 叶子N度与应用的N率直接相关,1.3%的N被确定为缺陷值.
- 植物生长在50公斤Nha-1时被阻碍;更高的N率增加了叶子P水平.
- 过度的酸盐积累发生在两种最高的N应用率 (370和500公斤Nha-1) 的土壤中.
结论:
- 对于密集种植的乔乔巴来说,建议采用150公斤N ha-1的最佳N应用率,以平衡生产力,成本和环境影响.
- 叶子分析提供了一种可靠的方法来诊断jojoba中的N缺乏.
- 季末的土壤采样可以有效地检测过度应用的,防止环境污染.
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