酸果园的"土壤-植物"系统中的动态的特点
Tatyana Roeva1, Elena Leonicheva1, Larisa Leonteva1
1Russian Research Institute of Fruit Crop Breeding (VNIISPK), Zhilina 302530, Orel Region, Russia.
Plants (Basel, Switzerland)
|September 9, 2023
概括
在酸果园中过度使用酸肥料会导致的泄,不会改善树木的营养或产量. 为了避免营养损失和确保土壤健康,最优速率至关重要.
科学领域:
- 土壤科学 土壤科学
- 农业学是一种农业学.
- 植物营养 植物营养
背景情况:
- (K) 是果树发育和土壤健康的重要营养素.
- 了解果园土壤在施肥中的K动态对于可持续农业至关重要.
- 酸桃树需要足够的K来实现最佳的代谢过程,水果质量和产量.
研究的目的:
- 研究土壤化合物的跨年和季节性动态.
- 评估和肥应用对酸树质状况的影响.
- 为了确定最佳的受精率,以防止K缺乏和过度水.
主要方法:
- 从2017年到2020年,实地实验使用不同的尿素和硫酸率 (N30K40至N120K160公斤/ha).
- 在整个生长季节的土壤样本中分析可交换,水溶和不可交换的.
- 监测酸叶和果实中的含量,以及产量评估.
主要成果:
- 未受精的地块显示出K缺乏的迹象,包括低叶/果K和减少不可交换的K储量.
- 年度受精增加了可交换的K,积累速度以更高的速度加速.
- 在200mg/kg以上的可交换的K水平引发了季节性波动的增加和K出.
结论:
- 高肥率 (80公斤/公以上) 导致了显著的K浸,而没有增加植物可用的K库存.
- 增加肥料率并没有改善代谢过程,植物组织中的K含量或产量.
- 优化化肥是防止土壤K损失和确保酸桃树有效吸收营养的必要条件.
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