优化肥以提高高地大米的生产率和利能力,使用CSM-CERES-大米
Tajamul Hussain1,2, David J Mulla3, Nurda Hussain1
1Agricultural Innovation and Management Division, Faculty of Natural Resources, Prince of Songkla University, Hat Yai 90112, Songkhla, Thailand.
Plants (Basel, Switzerland)
|November 14, 2023
概括
优化高地大米的 (N) 施肥对于最大限度地提高产量和利能力至关重要. 这项研究使用了CSM-CERES-Rice模型来确定不同播种日期的经济最佳N受精率 (EONFR),发现量身定制的速度可以提高产量.
科学领域:
- 农业学是一种农业学.
- 作物建模作物建模
- 土壤科学 土壤科学
背景情况:
- (N) 缺乏限制了大米的生产力,而不平衡的应用导致经济和农业损失.
- 基于工艺的作物模型可以优化高地大米的N管理,提高生产效率和利能力.
研究的目的:
- 评估CSM-CERES-Rice模型在不同播种日期内确定高地大米最佳N受精率的能力.
- 确定特定于每个播种窗口的经济最佳N受精率 (EONFR).
主要方法:
- 使用两个生长季节的实地实验数据校准和验证了CSM-CERES-Rice模型.
- 模拟的米对各种N受精率 (N30N90) 的反应和扩展模拟到N240.
- 根据利能力和N利用,为三个播种窗口 (SD1,SD2,SD3) 确定了EONFR.
主要成果:
- 在校准和验证方面,CSM-CERES-Rice表现良好,主要参数的d-index高,nRMSE值低.
- 高地大米产量对高达180公斤N ha-1的肥反应反应良好,并观察到高原.
- 分别为SD1,SD2和SD3的140,170和130公斤N ha-1的已确定EONFR.
结论:
- CSM-CERES-Rice模型是一个可靠的决策支持工具,用于优化高地大米的N管理.
- 根据特定的播种窗口量身定制N受精率比统一的应用更有效,以最大限度地提高生产力和利能力.
相关概念视频
02:35Key Elements for Plant Nutrition
18.8K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
18.8K
01:59Plant Breeding and Biotechnology
19.0K
Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.
19.0K
01:46The Calvin Benson Cycle
4.6K
Ribulose 1,5- bisphosphate carboxylase/oxygenase (RuBisCo) is a critical enzyme that catalyzes carbon dioxide assimilation during photosynthesis. However, it is an inefficient enzyme, having an extremely slow catalytic rate. A typical enzyme can process about a thousand molecules per second; however, RuBisCo fixes only around three-carbon dioxides per second. Photosynthetic cells compensate for this slow rate by synthesizing very high amounts of RuBisCo, making it the most abundant single...
4.6K
02:41Responses to Drought and Flooding
10.7K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
10.7K