Abstract: A multilayered rail guide vehicle system for use in three-dimensional planting in a plant factory and a control method therefor, the system includes an upper computer, cultivation shelves, traveling devices, lifting devices, and an electric control system. The traveling devices and the lifting devices are arranged in a body of a rail guide vehicle. The upper computer is in wireless communication with the electric control system. A nutrient solution tank is arranged on each of the cultivation shelves, and a plurality of cultivation positions are arranged on the nutrient solution tank. The electric control system is arranged in the body of the rail guide vehicle, so as to obtain an operation mode and target information after receiving a task instruction transmitted by the upper computer, select and switch a positioning mode, and drive the traveling devices and the lifting devices to perform traveling and lifting positioning according to operation procedures.

Abstract: A preparation method of a carbon-based selenium-enriched fertilizer for rice is disclosed. The preparation method of the carbon-based selenium-enriched fertilizer for rice includes planting a selenium-enriched plant material; collecting and concentrating a selenium-enriched extracting solution; preparing modified selenium-enriched biomass charcoal from the tertiary residues; and preparing the carbon-based selenium-enriched fertilizer. In the present disclosure, active organic selenium enriched and generated by plant is compounded with the biomass charcoal, so that the fixation and loss of the active selenium in soil are reduced, and the utilization efficiency of the selenium fertilizer is improved.

Abstract: The present disclosure relates to a method for avoiding high temperature and maintaining yield of rice. The method prevents high temperature and builds a comprehensive disaster prevention and mitigation system by screening high-temperature resistant varieties, sowing at suitable time, cultivating strong seedlings, irrigating, applying silicon fertilizer and adjusting density, and chemically regulating; the method can avoid or attenuate heat injury, and be conducive to maintaining yield in disasters. The present disclosure is appropriate for areas prone to high temperature in China, especially for rice regions in the middle and lower reaches of the Yangtze River and Southwest China, for example, Fuyang, Zhejiang Province, Lujiang, Anhui Province, Jingzhou, Hubei Province, and Luzhou, Sichuan Province.

Abstract: A preparation method of a carbon-based selenium-enriched fertilizer for rice is disclosed. The preparation method of the carbon-based selenium-enriched fertilizer for rice includes planting a selenium-enriched plant material; collecting and concentrating a selenium-enriched extracting solution; preparing modified selenium-enriched biomass charcoal from the tertiary residues; and preparing the carbon-based selenium-enriched fertilizer. In the present disclosure, active organic selenium enriched and generated by plant is compounded with the biomass charcoal, so that the fixation and loss of the active selenium in soil are reduced, and the utilization efficiency of the selenium fertilizer is improved.

Abstract: This specification discloses a unique Web search engine to help people find information on the Web more easily and efficiently, and a page-sized query algorithm which is applicable to Web search engines and other systems using large-scale databases. The Web search engine utilizes a simple hierarchical structure under the category Web, multiple ranks of records, diversified views of search results, display of unlimited records that are matched with keywords in the database, and opening any page of search results randomly. The page-sized query is different from the conventional queries in which the records are displayed on pages by skipping from the beginning of the record set (except page 1). In the page-sized queries, the records are directly displayed from the beginning of the record set on all pages, and the query size is restricted to a proper number that is equal to or a little larger than the record number for one page.

Abstract: This specification discloses a method and system to utilize Web resources for learning language words and phrases that are found in either general language study or specific language tests, such as SAT, GRE, TOEFL and GMAT, etc. The vocabulary and Web resource information are indexed and stored into a vocabulary database. From a user interface, learners view the vocabulary and open a Web page on which the current word or phrase is used. The vocabulary is automatically found and highlighted in the text of Web pages to attract learners' attention. The data in the database are routinely audited to check whether or not the index of vocabulary and Web resource information is valid. The major advantage of the present invention is to fully utilize a large number of free and easily accessible stories, fictions, essays and notes on the Web for language vocabulary learning.