US 12,302,800 B2
Method for interplanting grape and Polygonatum kingianum in photovoltaic (PV) power plant
Jiufu Luo, Beijing (CN); Xin Sui, Beijing (CN); Zhongxin Luo, Beijing (CN); Sainan Wu, Beijing (CN); and Xiaolin Luo, Beijing (CN)
Assigned to China Institute of Water Resources and Hydropower Research, (CN)
Filed by China Institute of Water Resources and Hydropower Research, Beijing (CN)
Filed on Jul. 20, 2023, as Appl. No. 18/224,060.
Claims priority of application No. 202211265055.6 (CN), filed on Oct. 17, 2022.
Prior Publication US 2024/0122129 A1, Apr. 18, 2024
Int. Cl. A01G 17/06 (2006.01); A01G 25/02 (2006.01); A01G 25/16 (2006.01); H02S 20/10 (2014.01); A01C 14/00 (2006.01); A01G 22/05 (2018.01); A01G 22/15 (2018.01); A01G 22/60 (2018.01)
CPC A01G 17/06 (2013.01) [A01G 25/02 (2013.01); A01G 25/165 (2013.01); A01G 25/167 (2013.01); H02S 20/10 (2014.12); A01C 14/00 (2013.01); A01G 22/05 (2018.02); A01G 22/15 (2018.02); A01G 22/60 (2018.02)] 10 Claims
OG exemplary drawing
 
1. A method for interplanting grape and Polygonatum kingianum in a photovoltaic (PV) power plant, wherein the PV power plant comprises a plurality of PV modules and the method comprises the following steps:
step S1, configuring a plurality of uprights in the PV power plant, each of the uprights being located in a space formed by the plurality of PV modules, wherein in a same space, a height of an upright at south of the PV modules is lower than a height of an upright at north of the PV modules, the height of the upright at south of the PV modules is 0.8-1.0 m, and the height of the upright at north of the PV modules is 1.8-2.2 m;
step S2, welding a traction crossbar between adjacent two of the uprights in an east-west direction, and welding a supporting bar between adjacent two of the uprights in a south-north direction; linking a plurality of iron wires between the supporting bars to form a wire mesh that is coplanar with the traction crossbar and is placed, higher in south and lower in north, wherein the traction crossbar is welded to the south upright at 1.6-2.0 m above the ground, to form a grapevine traction frame;
step S3, making a grape ridge at a bottom of a south side of each PV module, digging planting pits on the grape ridge and planting grape seedlings free of disease and insect and pest damage, wherein the grape ridge has a width of 1 m; the planting pits each have a size of 40 cm×40 cm×50 cm, and adjacent two of the grape seedlings free of disease and insect and pest damage are spaced by 1.8-2.4 m;
step S4, maintaining two branches for each of the grape seedlings free of disease and insect and pest damage and pulling the two branches along the traction crossbar below south of each PV module in a same calendar year of grape planting; pulling branches grown out from arm bud points southwards onto the wire mesh in a next calendar year of grape planting;
step S5, sowing a green manure on a plowing layer in the same calendar year of grape planting, and ploughing the green manure at growing season; and
step S6, in autumn of the calendar year after ploughing the green manure, making a planting bed below the grapevine traction frame and in a shade formed by each PV module, digging pits in the planting bed and planting Polygonatum kingianum with a row spacing of 30 cm×40 cm.