5 results about "Nitrogen accumulation" patented technology

The application provides a gene for improving nitrogen utilization efficiency of wheat under nitrogen deficiency conditions and application thereof, and belongs to the technical field of biological agriculture. The gene erf related to the nitrogen deficiency tolerance trait is obtained through normal nitrogen and nitrogen deficiency stress treatment of natural wheat varieties in the world and whole genome association analysis and verification. The erf gene not only responds to the up-regulated expression under the nitrogen deficiency stress of wheat, but also promotes the growth and nitrogen accumulation of wheat under the nitrogen deficiency conditions through a negative adjustment mode, so as to improve the nitrogen utilization efficiency of wheat. The erf gene provided by the application can effectively regulate the growth and nitrogen utilization of wheat under the nitrogen deficiency conditions, provides a new strategy for the construction and breeding of wheat varieties with nitrogen deficiency tolerance, and provides an effective site for the detection and variety identification of the wheat environment under the nitrogen deficiency.

This invention provides a wheat Fd gene and its application in regulating nitrogen use efficiency in wheat under nitrogen deficiency conditions, belonging to the field of bio-agricultural technology. This invention screened 284 wheat varieties for nitrogen deficiency stress treatment to obtain the Fd gene associated with nitrogen deficiency tolerance. The Fd gene not only exhibits downregulated expression in response to nitrogen deficiency stress in wheat, but also promotes wheat growth and nitrogen accumulation under nitrogen deficiency conditions through negative adjustment, thereby improving wheat nitrogen use efficiency. The Fd gene provided by this invention can effectively regulate wheat growth and nitrogen use under nitrogen deficiency conditions, providing a new strategy for the construction and breeding of nitrogen-tolerant wheat varieties, and also providing an effective site for the detection and variety identification of nitrogen-deficient wheat environments.

The application belongs to the technical field of plant molecular breeding, and provides a corn ZmAAP37 Gene in regulating corn agronomic traits and grain nitrogen accumulation, the application includes at least one of the following: (1) increase the nitrogen content of corn kernel; (2) increase the free amino acid content of corn kernel; (3) improve the aboveground biomass of corn plant; (4) increase the plant height of corn plant; (5) delay the leaf senescence of corn plant; (6) improve the nitrogen utilization rate of corn. The application shows that, ZmAAP37 By increasing the transport of amino acids in leaves to phloem, the nitrogen remobilization is promoted, and finally the grain nitrogen concentration is significantly increased without affecting the grain yield. The application provides ZmAAP37 The gene can provide new gene resources for nitrogen utilization of crops, especially corn, and has great application value in regulating nitrogen utilization of crops.

This invention discloses a device for preventing nitrogen accumulation in molten steel during the refining process of an LF furnace. The device includes an LF furnace body, a furnace cover, an argon gas filling pipe, and an argon gas distribution mechanism for injecting argon gas from the filling pipe into multiple locations within the LF furnace body. A baffle is installed inside the furnace cover, and the argon gas distribution mechanism is located below the baffle. The argon gas filling pipe passes through the furnace cover and the baffle. This device prevents nitrogen accumulation in molten steel during the LF furnace refining process by installing the furnace cover at the upper end of the LF furnace body. During steel refining, argon gas is introduced into the filling pipe by connecting it to an argon gas pipeline. The argon gas is then transported from the filling pipe to a circular pipe via a connecting pipe. Finally, the argon gas is evenly injected into the LF furnace body through jet nozzles, forming an argon gas protective layer on the uppermost surface of the molten steel. This effectively isolates the molten steel from contact with nitrogen in the air, thus preventing nitrogen accumulation. This invention also discloses a method for preventing nitrogen accumulation in molten steel during the LF furnace refining process.

The present application relates to the field of wisdom agricultural technology, disclose a kind of middle-low yield field hybrid rice canopy light nitrogen coupling high yield regulation method and system, the method includes: in tillering flourishing period to heading stage, obtain the real-time light transmittance of hybrid rice canopy;Based on the hysteresis compensation relationship of real-time light transmittance and leaf nitrogen accumulation quantity, construct nitrogen demand model, output target nitrogen application amount;According to target nitrogen application amount, generate nitrogen application timing instruction, the instruction includes fertilization time point and duration, and adjacent fertilization time interval is dynamically adjusted by light transmittance change rate;Nitrogen application timing instruction is executed and synchronously monitors leaf nitrogen accumulation quantity;Based on the dynamic deviation of leaf nitrogen accumulation quantity and preset nitrogen accumulation quantity threshold, the hysteresis compensation relationship of nitrogen demand model is feedback corrected before the next growth stage starts.The present application realizes the efficient coupling of canopy light resource dynamics and nitrogen precise supply, effectively improves the light nitrogen resource utilization efficiency of middle-low yield field hybrid rice.