What are the high-yield cultivation techniques for summer corn?
What methods can make summer corn high-yielding? Please provide guidance. To achieve high yields when planting summer corn, you can refer to the following techniques: 1. Carefully select corn seed: Before sowing, spread the corn seed evenly and turn it to sun-dry for two days, then remove small grains, blighted grains, broken grains and moldy grains; this is the foundation for cultivating strong seedlings. 2. Single-seed dibbling...
What methods can make summer corn high-yielding? Please provide guidanceTo achieve high yields when planting summer corn, you can refer to the following techniques:
1. Carefully select corn seed:
Before sowing, spread the corn seed evenly and turn it to sun-dry for two days, then remove small grains, blighted grains, broken grains and moldy grains; this is the foundation for cultivating strong seedlings.
2. Single-seed dibbling of corn:
Single-seed dibbling can avoid too many seedlings competing for fertilizer and root damage during thinning, and it helps cultivate strong seedlings. If direct sowing, the seeding rate should preferably be 2 kg per mu, and after emergence, thin and finalize the seedlings early.
3. Leave enough corn seedlings per mu, 4000 plants:
Seedling spacing methods: 1. Row spacing 50 cm x plant spacing 30 cm; 2. Row spacing 60 cm x plant spacing 25 cm; 3. Row spacing 60 cm x plant spacing 20 cm.
4. Skillfully apply corn starter fertilizer:
Mix and apply 2 kg urea and 2 kg diammonium phosphate per mu. When dibbling, use 1 gram per hole; if direct sowing, one person drops the seed and one person drops the fertilizer.
5. Apply corn strong-seedling fertilizer in time:
After finalizing the seedlings (5-leaf stage), combine intertillage and stubble clearing, loosen the soil to control vigorous growth, and apply strong-seedling fertilizer, with 50 kg ammonium bicarbonate per mu.
6. Increase application of corn strong-plant fertilizer:
At the large trumpet stage, apply 80 kg ammonium bicarbonate, 10 kg diammonium phosphate and 10 kg potassium fertilizer per mu.
7. Timely control of pests and diseases:
In the late large trumpet stage, pay attention to observing pest conditions and promptly control corn borers. Use 1 kg carbofuran granules per mu, mix with 3 kg fine soil, use 1 gram per plant, and scatter it into the leaf whorl. At the heading stage, control aphids by spraying 1000-fold omethoate solution.
8. Alternate-row detasseling:
When 20% of the tassels have emerged, begin removing the tassels, removing every other row, and do not remove those on the border rows and field edges.
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