Do a good job of seed treatment
1 sowing before drying. Can increase the rate of emergence of 15% to 20%, early emergence of 1 to 2 days, an increase of 64%. Before sowing, the seeds were spread before and after noon on sunny days. They were sunned 4 to 5 hours a day and dried for 2 to 3 days.
2 Soaking. Generally used cold soaking, warm hot and human urine soaking three kinds. Cold water soaking time is about 12 hours, warm hot ("two open a cool" warm water, initial temperature of about 56 °C) 6 hours, human urine soaking is used to place about 7 days of human urine 25 kg water 25 kg, soaking for 12 hours . When soaking, it is appropriate to use the soaking liquid flush with the seed.
3 drug seed dressing. The seed dressing can be seeded with a 1% seed coating agent. The bio-inoculated Si-1 bio-potash fertilizer was used for seed dressing. The amount of mu was 0.5 kg, which was transferred to 200 ml of water to make it thick. Such as soil zinc deficiency, zinc sulfate seed dressing can be used, 5 grams per kilogram of seed consumption.
The suitable sowing wheat field interplanting corn suitable sowing date is 7-15 days before wheat harvest. Middle-maturing, late-maturing corn varieties or low-yield wheat crops should be early, early-maturing corn varieties or high-yield wheat crops should be late, poorly watered plots, interplanting time is mainly subject to the lyrics. Unconditionally interplanted summer live corn, stick to plant seeds, the sooner the better.
Fine sowing
1 The soil relative moisture content at the time of sowing and uniform corn planting should not be less than 70%.
2 Ditch the precise amount of on-demand, according to the average spacing of about 62 cm (planted in large and small rows, 80 cm in big rows, 45 cm in small rows), use a rake or plough to open the 5-6 cm deep sow ditch, with a spacing of 18-20 cm. Seed grains, about 5500 per acre, and then covered with wet soil cover.
Seedling preparation and supplementary planting At the same time or later, 300 to 400 plants per acre are planted in the field or in the nursery. When the leaves are 5-6, the seedlings are raised from the soil, and the upper leaves of the tall plantlets are cut off by one-third, and a supplementary planting is carried out on the ridges of the vacant shoots. Pay attention to water filling and compaction during supplementary planting.
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