US 12,213,412 B2
Method for micro-ridge mixed-sowing cultivation of rice
Huang Huang, Changsha (CN); Yin Zhang, Changsha (CN); Ren Wang, Changsha (CN); Xiangsheng Gong, Changsha (CN); Zhiqiang Fu, Changsha (CN); Can Chen, Changsha (CN); Zhengjun Yu, Changsha (CN); Jingyi Li, Changsha (CN); Yugang Liang, Changsha (CN); Jiaolong Ding, Changsha (CN); Xiangjie Meng, Changsha (CN); Dan Wu, Changsha (CN); Yao Huang, Changsha (CN); and Xiaolan Liao, Changsha (CN)
Assigned to Hunan Agriculture University, Changsha (CN)
Appl. No. 17/429,638
Filed by Hunan Agriculture University, Changsha (CN)
PCT Filed Apr. 26, 2021, PCT No. PCT/CN2021/089813
§ 371(c)(1), (2) Date Aug. 10, 2021,
PCT Pub. No. WO2022/028011, PCT Pub. Date Feb. 10, 2022.
Claims priority of application No. 202010782482.6 (CN), filed on Aug. 6, 2020.
Prior Publication US 2022/0304258 A1, Sep. 29, 2022
Int. Cl. A01G 22/22 (2018.01); A01B 49/06 (2006.01); A01B 79/02 (2006.01); A01C 5/06 (2006.01); A01C 11/00 (2006.01); A01C 14/00 (2006.01); A01C 21/00 (2006.01); A01G 25/00 (2006.01)
CPC A01G 22/22 (2018.02) [A01B 49/06 (2013.01); A01B 79/02 (2013.01); A01C 5/064 (2013.01); A01C 11/003 (2013.01); A01C 14/00 (2013.01); A01C 21/005 (2013.01); A01G 25/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for micro-ridge mixed-sowing cultivation of rice, comprising the following steps:
S1: draining away water at a maturity stage of a preceding crop until reaching a state allowing a harvester to operate;
S2: harvesting the preceding crop, leaving standing stubble, smashing stalks of the preceding crop to obtain smashed stalks, and then spreading the smashed stalks on the standing stubble to form a rhizosphere layer for rice growth;
S3: trenching a field to form a plurality of ecological trenches, wherein ecological trenches comprise a trench body, side cracks, and bottom mud;
S4: flattening the standing stubble and the smashed stalks on a seedbed surface to form an underlying surface; thoroughly mixing rice seeds, chemical fertilizers and soil at a mass ratio of 6 to 14:50 to 70; and 6,000 to 10,000 to produce seed-fertilizer-soil compounds, molding the seed-fertilizer-soil compounds into a ridge shape and falling the seed-fertilizer-soil compounds on the underlying surface to form a plurality of ecological ridges, wherein ecological ridges of the plurality of ecological ridges are formed between adjacent ecological trenches of the plurality of ecological trenches, each of the plurality of ecological ridges is a trapezoid with a bottom width of 5.5 cm to 9.5 cm, a top width of 1.5 cm to 3.5 cm and a height 3.5 cm to 6.5 cm, an ecological depression comprising a sponge layer, a topsoil layer, and ecological cracks is formed between adjacent ecological ridges of the plurality of ecological ridges, and after performing a sowing, an irrigation is carried out once in a manner, wherein the manner comprises: draining irrigation water shortly after the irrigation, without leaving a water layer in the field.