The invention discloses a method of rapid generation-adding breeding of rice in the technical field of rice breeding, including soaking seeds of the rice, germination, seedlings cultivation, managing and regulating of the rice at the growth stage, and harvesting the rice. The managing and regulating the rice at the growth stage includes dynamic light quality and photoperiod control in vegetative growth period, heading period and pustulation period; growth period involves light environment regulation with the ratio of red light:blue light:white light of 0.8-1:0.8-1:1.0, photoperiod of 16-18 h; heading period involves light environment regulation with the ratio of red light:blue light:white light of 1-2:0.5-1:1, photoperiod of 12-13.5 h; and pustulation period includes light environment regulation with the ratio of red light:blue light:white light of 1-2:1:1, photoperiod of 16-18 h.

The invention discloses a method of rapid generation-adding breeding of rice in the technical field of rice breeding, including soaking seeds of the rice, germination, seedlings cultivation, managing and regulating of the rice at the growth stage, and harvesting the rice. The managing and regulating the rice at the growth stage includes dynamic light quality and photoperiod control in vegetative growth period, heading period and pustulation period; growth period involves light environment regulation with the ratio of red light:blue light:white light of 0.8-1:0.8-1:1.0, photoperiod of 16-18 h; heading period involves light environment regulation with the ratio of red light:blue light:white light of 1-2:0.5-1:1, photoperiod of 12-13.5 h; and pustulation period includes light environment regulation with the ratio of red light:blue light:white light of 1-2:1:1, photoperiod of 16-18 h.

The present invention discloses a method for improving cadmium tolerance in rice and reducing cadmium content in rice grains, and belongs to the technical field of microbial applications. In the present invention, an endophytic fungi Falciphora oryzae FO-R20 with a deposit number of CCTCC M 2021505 is subjected to seedling co-raising with rice in a fungal fertilizer form, the endophytic fungi Falciphora oryzae FO-R20 is colonized in the root tissue of rice, and then the rice seedlings are transplanted to a field until harvest. Therefore, the tolerance of rice to cadmium is improved, the content of heavy metal cadmium in the grains of rice is reduced by 12.61%. The FO-R20 has great value by popularization and application in guaranteeing plant health and improving crop quality

The present invention discloses a method for improving cadmium tolerance in rice and reducing cadmium content in rice grains, and belongs to the technical field of microbial applications. In the present invention, an endophytic fungi Falciphora oryzae FO-R20 with a deposit number of CCTCC M 2021505 is subjected to seedling co-raising with rice in a fungal fertilizer form, the endophytic fungi Falciphora oryzae FO-R20 is colonized in the root tissue of rice, and then the rice seedlings are transplanted to a field until harvest. Therefore, the tolerance of rice to cadmium is improved, the content of heavy metal cadmium in the grains of rice is reduced by 12.61%. The FO-R20 has great value by popularization and application in guaranteeing plant health and improving crop quality

The present invention discloses an endophytic fungus FO-R20 and applications thereof, and belongs to the technical filed of microbial applications. The deposit number of the endophytic fungus FO-R20 is CCTCC M 2021505, and the scientific name thereof is Falciphora oryzae. The present invention provides a novel endophytic fungal strain in the genus Phialophora. Colonization of the endophytic fungus FO-R20 in the root tissues of rice can significantly improve the quality of rice seedlings and enhance the rice yields. The remarkable effect of symbiosis and interactions of the endophytic fungus FO-R20 on rice has huge value in the agricultural field by application and popularization thereof.

The present invention discloses an endophytic fungus FO-R20 and applications thereof, and belongs to the technical filed of microbial applications. The deposit number of the endophytic fungus FO-R20 is CCTCC M 2021505, and the scientific name thereof is Falciphora oryzae. The present invention provides a novel endophytic fungal strain in the genus Phialophora. Colonization of the endophytic fungus FO-R20 in the root tissues of rice can significantly improve the quality of rice seedlings and enhance the rice yields. The remarkable effect of symbiosis and interactions of the endophytic fungus FO-R20 on rice has huge value in the agricultural field by application and popularization thereof.

Disclosed is a method for optimizing a particle size of slow-release nitrogen fertilizer oxamide particles for single basal fertilization, which comprises the following steps: measuring a pH value of the soil in a region; measuring an organic matter content OM of the soil, with a unit of g.kg.sup.−1; measuring a total nitrogen content TN of the soil, with a unit of g.kg.sup.−1; collecting an average temperature T at a 10 cm depth of the soil in a rice growing season in the region, with a unit of ° C.; and for a rice variety with a growth duration of D, with a unit of day, calculating a diameter of slow-release nitrogen fertilizer oxamide particles for single basal fertilization that matches a nitrogen requirement in the rice growth duration by using a formula.

The present disclosure provides an integrated rice-crayfish-oriental river prawn planting-breeding method. The method includes the following steps: stocking crayfish postlarvae in a paddy field as an integrated rice-crayfish-oriental river prawn farming area from February to March, catching and marketing the crayfish from May to June; planting in mid-June, sun-drying rice seedlings in the field in late June, cleaning and disinfecting a ring ditch surrounding the paddy field, and transplanting some aquatic plants; stocking oriental river prawn postlarvae in early July; harvesting ripe rice in late October; and catching and marketing the oriental river prawns in November. On the premise that the rice planting area is not reduced, the present disclosure realizes the effective expansion of time and space of the paddy field and improves comprehensive benefits of rice-fish farming in the form of integrated rice-crayfish-oriental river prawn planting-breeding.

The present disclosure provides an integrated rice-crayfish-oriental river prawn planting-breeding method. The method includes the following steps: stocking crayfish postlarvae in a paddy field as an integrated rice-crayfish-oriental river prawn farming area from February to March, catching and marketing the crayfish from May to June; planting in mid-June, sun-drying rice seedlings in the field in late June, cleaning and disinfecting a ring ditch surrounding the paddy field, and transplanting some aquatic plants; stocking oriental river prawn postlarvae in early July; harvesting ripe rice in late October; and catching and marketing the oriental river prawns in November. On the premise that the rice planting area is not reduced, the present disclosure realizes the effective expansion of time and space of the paddy field and improves comprehensive benefits of rice-fish farming in the form of integrated rice-crayfish-oriental river prawn planting-breeding.

The present invention is a plant growth promoter containing a lignocellulosic biomass, wherein the lignocellulosic biomass has a lignin content of 40% by mass or more and 60% by mass or less and a contact angle with water of 50° or less.