T/GTHXM 002-2022 Active Group standards

T/GTHXM 002-2022 High-Yield Cultivation Technology Standards for Corn (Chengyu 668)

T/GTHXM 002-2022

Publish Date: 2022-03-23 Implement Date: 2022-05-06 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/GTHXM 002-2022

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Integrated agriculture and forestry

ICS Name: Terminology (principles and coordination and cooperation)

Publish Date: 2022-03-23

Implement Date: 2022-05-06

Scope

Main Technical Content: 4. Cultivation Techniques The cultivation techniques not specified in this clause shall still follow conventional farming and agronomic practices. 4.1 Pre-sowing Preparation 4.1.1 Tillage The wheat straw must be finely crushed and evenly scattered. The length of shredded wheat straw should be ≤10 cm, with a qualified cutting rate of ≥95% and an uneven scattering rate of ≤20%. The cutting loss rate should be ≤1.5%. 4.1.2 Seed Selection Seeds should be purchased from regular seed trading departments and meet the standards of GB 4404.1-2008. The germination rate of the seeds should be ≥95%, the purity of original seeds ≥99.8%, and the purity of hybrid seeds ≥98%. 4.1.3 Secondary Coating Seeds can be coated a second time to prevent early pests such as underground pests, gray aphids, and stunt disease. Use 70% imidacloprid seed treatment agent at 10 g per 8-10 jin of seeds, or 20% thiamethoxam suspension at 7-10 mL per jin of seeds, or 27% fenpyroximate + thiamethoxam seed treatment agent at 30 mL per 15 jin of seeds. If the original seed coating agent used on the seed packaging already contains the above-mentioned agents, they cannot be reused. 4.2 Sowing 4.2.1 Sowing Period and Density The suitable sowing period is from June 5 to 25, with a suitable density of approximately 4,500 plants per mu. 4.2.2 Sowing Method Iron-till sowing is recommended, and precision sowing is encouraged. The single-seed rate of precision sowing should be ≥90%, the mechanical crushing rate should not exceed 0.5%, the empty hole rate should be less than 1%, and the planting spacing should be uniform without significant variations in size. The seed damage rate should not be too high, and the sowing and covering depth should be consistent. Each day of early sowing increases the average 1,000-grain weight by 1.22-1.75 g, and the average yield per mu increases by 3.3-17.3 kg. Each day of late sowing increases the average 1,000-grain weight by 2.2