A method for micro-ridge mixed-sowing cultivation of rice includes: S1: draining away water at the maturity stage of the preceding crop until reaching a state allowing a harvester to operate; S2: harvesting the preceding crop, leaving the stubble, smashing the stalks of the preceding crop, and then spreading the smashed stalks on the stubble to form a rhizosphere layer for rice growth; S3: trenching the field to form ecological trenches; S4: flattening the standing stubble and the smashed stalks on the seedbed surface to form an underlying surface, molding seed-fertilizer-soil compounds into a ridge shape and fall the seed-fertilizer-soil compounds on the underlying surface to form ecological ridges, wherein a plurality of ecological ridges are formed between adjacent ecological trenches, and the seed-fertilizer-soil compounds are obtained by thoroughly mixing rice seeds, chemical fertilizers and soil at a mass ratio of 6 to 14:50 to 70:6,000 to 10,000.

A method for micro-ridge mixed-sowing cultivation of rice includes: S1: draining away water at the maturity stage of the preceding crop until reaching a state allowing a harvester to operate; S2: harvesting the preceding crop, leaving the stubble, smashing the stalks of the preceding crop, and then spreading the smashed stalks on the stubble to form a rhizosphere layer for rice growth; S3: trenching the field to form ecological trenches; S4: flattening the standing stubble and the smashed stalks on the seedbed surface to form an underlying surface, molding seed-fertilizer-soil compounds into a ridge shape and fall the seed-fertilizer-soil compounds on the underlying surface to form ecological ridges, wherein a plurality of ecological ridges are formed between adjacent ecological trenches, and the seed-fertilizer-soil compounds are obtained by thoroughly mixing rice seeds, chemical fertilizers and soil at a mass ratio of 6 to 14:50 to 70:6,000 to 10,000.

A grafting technique effective for crops such as soybean and plants of the Poaceae family including rice, wheat, corn, etc. and a method of grafting crops of the present invention comprising the steps of replacing a radicle of a dry dormant seed with a radicle of another dormant seed capable of achieving grafting, and thereafter, germinating the seed.

A method for breeding a new variety of a ratoon rice crop and a cultivation method for the new variety of a ratoon rice crop. The method comprises: breeding a photosensitive variety of a rice crop; growing a ratoon rice crop under conditions of a long photoperiod; and taking corresponding cultivation measures to extend the growth duration of the ratoon rice crop. The invention increases grain yield while also permitting more uniform maturity of a ratoon rice crop. When compared to existing methods for cultivating ratoon rice crops, the invention greatly improves the grain yield and quality of a ratoon rice crop, and has economic and social benefits.

A method for breeding a new variety of a ratoon rice crop and a cultivation method for the new variety of a ratoon rice crop. The method comprises: breeding a photosensitive variety of a rice crop; growing a ratoon rice crop under conditions of a long photoperiod; and taking corresponding cultivation measures to extend the growth duration of the ratoon rice crop. The invention increases grain yield while also permitting more uniform maturity of a ratoon rice crop. When compared to existing methods for cultivating ratoon rice crops, the invention greatly improves the grain yield and quality of a ratoon rice crop, and has economic and social benefits.

This invention relates to methods and materials for providing a benefit to a plant by associating the plant with a complex endophyte comprising a host fungus further comprising a component bacterium, including benefits to a plant derived from a seed or other plant element treated with a complex endophyte. For example, this invention provides purified complex endophytes, purified complex endophyte components such as bacteria or fungi, synthetic combinations comprising said complex endophytes and/or components, and methods of making and using the same.

The present disclosure provides a temperature control system of a rice paddy methane flux collecting device, which comprises: a chamber body having a collecting space in which a certain number of rice grains are located; a chamber door configured to open and close an upper side of the collecting space; a collecting unit configured to collect a sample gas in the collecting space; a heating unit and a cooling unit configured to increase or decrease the temperature in the collecting space; a circulation unit for circulating the gas in the collecting space; a ventilation unit configured to ventilate the collecting space; an external temperature sensor and an internal temperature sensor for measuring external and internal temperatures of the collecting space; and a temperature controller configured to control the above units to maintain the temperature in the collecting space to be equal to the external temperature.

The present disclosure provides a temperature control system of a rice paddy methane flux collecting device, which comprises: a chamber body having a collecting space in which a certain number of rice grains are located; a chamber door configured to open and close an upper side of the collecting space; a collecting unit configured to collect a sample gas in the collecting space; a heating unit and a cooling unit configured to increase or decrease the temperature in the collecting space; a circulation unit for circulating the gas in the collecting space; a ventilation unit configured to ventilate the collecting space; an external temperature sensor and an internal temperature sensor for measuring external and internal temperatures of the collecting space; and a temperature controller configured to control the above units to maintain the temperature in the collecting space to be equal to the external temperature.

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.

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.