US 12,324,427 B1
Weeding method of alternately cultivating ducks by block dividing in organic rice field and application thereof
Hongyuan Liu, Changchun (CN); Bolong Wen, Changchun (CN); and Qianshi Wang, Daan (CN)
Assigned to Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun (CN); and Daan Xinda Agriculture Development Co. LTD, Daan (CN)
Filed by Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun (CN); and Daan Xinda Agriculture Development Co. LTD, Daan (CN)
Filed on Dec. 5, 2024, as Appl. No. 18/969,681.
Claims priority of application No. 202410841637.7 (CN), filed on Jun. 27, 2024.
Int. Cl. A01G 22/22 (2018.01); A01M 21/02 (2006.01); A01C 11/00 (2006.01)
CPC A01M 21/02 (2013.01) [A01C 11/003 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A weeding method of alternately cultivating ducklings by block dividing in an organic rice field, wherein the organic rice field is divided into a plurality of blocks, every four blocks of the plurality of blocks define an operation unit;
the method comprises the following steps:
harrowing and mud mixing the organic rice field 1-3 days before transplanting rice seedlings;
transplanting the rice seedlings into the organic rice field;
dividing the organic rice field into a plurality of blocks, wherein each block of an operation unit is partitioned using partition nets;
10 days after transplanting the rice seedlings, releasing the ducklings into a first block of each operation unit at a density of 20 ducklings/667 m2, wherein the ducklings in each of the first blocks stay for one day, and then the ducklings are manually driven to a next block of the operation unit, wherein the ducklings in each of a second block of each operation unit stay for one day until alternate cultivation of the four blocks in one operation unit is completed, thus completing a first round of alternate cultivation;
during the first round of alternate cultivation, after the ducklings enter the next block, field inspection is carried out in the previous block to pick up missing or dead ducklings for centralized treatment; and
after completing the first round of alternate cultivation, starting a second round of alternate cultivation, wherein the ducklings remain in each block for two days during the second and subsequent rounds; and
circulating multiple rounds of alternate cultivation until the rice seedlings grow and enter an initial heading stage.