41 results about "Weedy rice" patented technology

The invention discloses a method used for breeding imidazolinone herbicide-resistant japonica rice. According to the method, imidazolinone herbicide-resistant Oryza sativa subsp. japonica mutant CL55 is taken as the parent, and hybridization with a high-quality high-yield conventional japonica rice variety is carried out; conventional breeding and seedling stage herbicide resistance identification and screening technology are combined so as to breed the imidazolinone herbicide-resistant japonica rice variety. Compared with that of CL55, agronomic traits, yield, and quality of the imidazolinone herbicide-resistant japonica rice variety are improved and increased greatly. Genetically modified organism-free technology is adopted to breed the imidazolinone herbicide-resistant japonica rice variety, weed control problems of weedy rice in direct seeding rice fields can be solved, labor intensity is reduced, production cost is reduced, and the development of rice light cultivation technology of our country is promoted.

The invention relates to a method for preventing and removing rice weeds and weeds in direct seeding and interplanting seeding paddy, which pertains to a technical field of plant protection. The invention is mainly characterized in that: rice weed seeds and weed seeds left during direct seeding and interplanting seeding of last year are induced to grow; after former planted paddy is harvested, Glyphosate, a spray sterilant herbicide, is employed to prevent rice weeds and weeds, and solving the problem of incapability of removing older green weeds left during former planting paddy in direct seeding and interplanting seeding paddy; meanwhile, the Glyphosate has no effect on germination and growth of planted rice seeds and is environment friendly. The method for preventing and removing of the invention overcomes the shortages of incapability of employing chemical herbicides to remove rice weeds, worse and worse influence to normal direct seeding paddy, interplanting seeds, etc., and evendestruction of cultivation and repeated displanting. The method for preventing and removing is in favor of paddy production in direct seeding and interplanting seeding and has significant social benefits.

The invention discloses a directional seed metering device for a super japonica rice seedling and belongs to agricultural machinery. A first speed regulating motor, a second speed regulating motor, a driving roller assembly and a driven roller assembly are assembled on a frame assembly; horizontal conveyor belts are sleeved on the driving roller assembly and the driven roller assembly; two lateral plates are assembled at the upper end part of the frame assembly through a fixed bracket and a parallel four-rod inclination angle adjusting mechanism; rack seat boards with sawtooth racks are arranged at the inner sides of the two lateral plates through front and rear four-connecting rod drive mechanisms; V-shaped slideways are fixedly arranged on the part between the two lateral plates and above the rack seat boards; the sawtooth racks are arranged inside gaps at the bottoms of the V-shaped slideways; seed boxes and V-shaped seed metering plates are arranged at the left end parts and the right tail parts of the two lateral plates. By adopting the device, ordered regular arrangement of seed rice along the long axis direction is achieved; the accuracy of the seeding granularity of each hole is ensured by D-shaped movement tracks of the sawtooth racks; the directional seed metering device is good in operation quality, reliable to use, and fewer in faults.

The invention provides a high-speed rice seedling transplanting machine, which comprises a machine body and a rice seedling transplanting device at the rear of the machine body. The machine body comprises an engine, traveling wheels, a driver seat and a steering wheel. The rice seedling transplanting device comprises a rice seedling carrying platform, a rice seedling transplanting apparatus and aplurality of floating plates (46). The engine is installed at the protruding part of the output shaft of the engine at the front of a gearbox and on the side surface of the machine body. A certain distance is kept between one side of the gearbox and the output shaft of the engine. A hydraulic stepless transmission (HST) with an input shaft is installed at a parallel position. The output shaft is connected with the input shaft through a belt rotating device. A driven belt wheel (144) which transmits power through the output shaft (110a) of the engine (110) is installed in the input shaft (120a). A hydraulic pump (130) which can be linked with the driven belt wheel (144) is arranged on the external side of the machine body (1) on the same line of the driven belt wheel (144) and relative to the lateral side of the driven belt wheel (144). The high-speed rice seedling transplanting machine has the advantages that an extension shaft is not required to be added and an air pump can be connected onto the linked belt wheel; the assembling and production expenses of the device are reduced; and the configuration of a space-expanded high-speed rice seedling transplanting machine can be realized.

The invention discloses a molecular detection method for rapidly and accurately identifying weedy rice and cultivated rice, and belongs to the technical field of biology. The method includes the following steps: extracting a rice genomic DNA sample; performing nested PCR amplification on the rice genomic DNA sample; taking a PCR product as a substrate, and performing enzyme digestion reaction by using corresponding restriction enzyme; and detecting an enzyme-digested product through agarose gel electrophoresis to identify weedy rice and cultivated rice. The method can perform identification inthe seedling stage of rice, so that the purpose of early discovery and early weedy rice control can be achieved. The method adopts a nested PCR method to perform amplification on SNP sites, so that the specificity and sensitivity of amplification reaction can be guaranteed, and the obtained PCR product can be directly used for the enzyme digestion reaction of the restriction enzyme; and the wholeprocess does not exceed 6 hours, and needed instruments and reagents are easy to obtain and cheap in price, so that the method is simple in operation. The method designs three pairs of specific primers for three SNP sites, and adopts triple certification of detection results to guarantee the accuracy of the results.

The invention discloses a sugar-free tea-flavored purple sweet potato rice dumpling which consists of a glutinous rice material and purple sweet potato stuffing, wherein the glutinous rice material is prepared from the following raw materials in parts by weight: 100 parts of glutinous rice, 1-5 parts of blend oil and 0.5-3 parts of black tea powder, the purple sweet potato stuffing is prepared from the following raw materials in part by weight: 100 parts of purple sweet potatoes, 5-15 parts of cooked lard oil, 1-5 parts of modified starch and 0.01-0.1 part of tea polyphenol, and the weight ratio of the glutinous material to the purple sweet potato stuffing is (1-3):1. Compared with a conventional sweet rice dumpling taking sweetened bean paste as the stuffing, the sugar-free tea-flavored purple sweet potato rice dumpling takes the purple sweet potatoes as the stuffing, no white sugar needs to be added into the stuffing during frying, the sweet rice dumpling without sugar is realized by utilizing the natural sweet taste of the purple sweet potatoes, and the rice dumpling is fragrant and sweet in taste and unique in flavor. In the sugar-free tea-flavored purple sweet potato rice dumpling disclosed by the invention, the glutinous rice is added with the black tea powder, the fried purple sweet potato stuffing is added with the tea polyphenol, so that the effects of synergistic natural oxidation resistance and guarantee period extension can be achieved due to the internal and external combination, and the fresh rice dumpling can be stored in a shady and dry place for more than 10 days for selling.