Optimization of sowing dates for enhanced rice yield: insights from field experiments in the middle and lower reaches of the Yangtze River, China.

An efficacious strategy to adapt to climate change involves optimizing the planting season, a technique that has been extensively utilized to enhance the use of solar radiation and temperature resources in rice cultivation. Field experiments were executed in the middle and lower reaches of the Yangtze River, China, employing three distinct rice cultivars and seven disparate sowing periods spanning 2019 to 2021. The objective of assessing the impact of sowing date on apparent radiation use efficiency (RUE), accumulated temperature use efficiencies (TUE), and overall rice yield.

Ratoon Rice System of Production: A Rapid Growth Pattern of Multiple Cropping in China: A Review.

In this review, the significance of ratoon rice was introduced, and the research status and development trends of ratoon rice were also summarized. It is pointed out that mechanically harvested ratoon rice is the developing direction of future ratoon rice. On this basis, we analyzed the relationship between the yield of ratoon rice and many factors, such as variety characteristics, sowing date, water control, fertilizer, and many others.

Strategies for indica rice adapted to high-temperature stress in the middle and lower reaches of the Yangtze River.

High temperatures caused by climate warming severely affect the grain yield and quality of rice. In this study, the rice cultivars Longliangyou Huazhan (LLYHZ) and Quanliangyou 2118 (QLY2118) were selected as the experimental materials for investigation of an optimal cultivation system under high-temperature treatment. In addition, the heat-resistant cultivar Huanghuazhan (HHZ) and heat-sensitive cultivar Huiliangyou 858 (HLY858) were chosen as the experimental materials to study the effects of exogenous plant growth regulators on heat stress responses under high-temperature treatment.

Effect of Temperature and Radiation on Rice Yield and Quality in Middle Rice Cropping System.

Rice ( L.) is cultivated in a wide range of climatic conditions, thereby inducing great variations in the rice growth, yield and quality. However, the comprehensive effects of temperature and solar radiation under different ecological regions on the rice growth, yield and quality are not well understood, especially in a middle rice cropping system.

The effects of biochar soil amendment on rice growth may vary greatly with rice genotypes.

While plant growth promotion with increased nutrient uptake had been well addressed for biochar soil amendment in agriculture, there was limited knowledge on the variation of such effects with crop genotypes. In a rice field experiment without and with biochar soil amendment at 20 t ha, 19 mutants of a rice cultivar Wuyunjing 7 (Oryza sativa L.) were tested for plant growth in split plots respectively.

Grain chalkiness traits is affected by the synthesis and dynamic accumulation of the storage protein in rice.

Backgrouond: Grain chalkiness lowers the market value of rice. Alleviating grain chalkiness is the most challenging issue in many rice-producing areas of the world. Nitrogen (N) metabolism has received increasing attention as a result of its relationship with grain chalkiness, although little information is available on the mechanism of N-induced grain chalk.

iTRAQ-based quantitative proteomic analysis reveals the metabolic pathways of grain chalkiness in response to nitrogen topdressing in rice.

Grain chalkiness is a highly undesirable trait that adversely affects rice quality. This chalkiness is easily influenced by the application of chemical nitrogen (N) fertilizer at the late growth stage. However, on the molecular mechanism underlying grain chalkiness caused by late N fertilization is not fully clear.

[Effects of late sowing of two season crops on annual yield and resource use efficiency in rice-wheat double cropping system].

The unreasonable resource allocation and lower resource use efficiency for rice-wheat double cropping system in Jianghuai region resulted from climate change severely limit the coordinated development of annually high yield and high efficiency crops. Optimizing seasonal resource allocation through sowing date adjustment is an important way to tap the annual high-yield potential and improve resource use efficiency. To quantify the effects of sowing date of rice and wheat on annual yield and resource allocation and utilization efficiency, field experiments were conducted in 2013-2015.