通过优化品种,管理和温度-太阳辐射资源实现了高拉通季度大米产量
Zhong Li1, Linsheng Yang1, Shuang Cheng1
1Rice Research Institute, Anhui Academy of Agricultural Sciences, Hefei, 230031, Anhui, China.
概括
拉通大米种植从一个种植提供了两次收获,提高了粮食安全. 优化和品种选择可以提高其每日产量,尽管生长时间较短.
科学领域:
- 农业科学 农业科学
- 农业学是一种农业学.
- 植物生理学 植物生理学
背景情况:
- 拉通大米 (RR) 种植可以从单一种植中获得多次收获,大大提高了粮食安全的土地和资源利用.
- 季节性大米 (RSR) 的产量潜力受到品种适应性,管理以及温度和太阳辐射等环境因素的限制.
研究的目的:
- 通过元分析确定拉通大米的最佳管理策略.
- 为实地实验选择高产,适应性强的米品种.
- 为了比较主要季节大米 (MSR),季节大米 (RSR) 和季末大米 (LSR) 之间的产量形成和机制.
主要方法:
- 进行元分析,以确定拉松大米的最佳管理.
- 在多个地点进行实地实验,以选择高产和适应性强的水品种.
- 在最佳管理下对选定品种进行比较栽培,以分析产量差异.
主要成果:
- RSR产量低于MSR和LSR,但由于生长期较短,其日粮产量 (DGY) 显著更高.
- RSR在有效 (EP) 和种子设置百分比 (SSP) 中显示出优势,但每 (NP) 和1000粒重量 (TGW) 的粒数较少.
- 更好地利用温度和太阳辐射对RSR的EP和SSP产生了积极的影响.
结论:
- 提高温度和太阳辐射利用率可以增加RSR中的EP和SSP.
- 延长开花前的持续时间,增加开花前的累积温度和辐射,可以增强NP和TGW,克服产量限制.
- 这项研究为高产,高效的拉通大米种植提供了基础.
相关概念视频
Key Elements for Plant Nutrition
23.8K
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...
23.8K
Plant Breeding and Biotechnology
21.4K
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.
21.4K
Inorganic Nitrogen Assimilation
421
Nitrogen is an essential element in biological systems, forming a crucial component of proteins, nucleic acids, and other cellular constituents. Many bacteria and archaea acquire nitrogen in the form of nitrate (NO₃⁻) or ammonia (NH₃), which are then assimilated into biomolecules through specific enzymatic pathways.Assimilatory Nitrate ReductionWhen nitrate enters the cell, it undergoes a two-step reduction process known as assimilatory nitrate reduction. Initially, the enzyme...
421
The Calvin Benson Cycle
5.7K
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...
5.7K
Responses to Drought and Flooding
11.9K
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.
11.9K
Light Acquisition
9.3K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
9.3K


