Select high-quality hybrids and pay attention to the use of high purity and good quality hybrid generation. And strictly selected, to miscellaneous, crushed, mildew, to ensure that the purity and purity of seeds are higher than 97%, while the implementation of the size of the seed sowing.
Do a good job of seed treatment
1. Sowing before sowing. Can increase the rate of emergence of 15% -20%, early emergence of seedlings 1-2 days, an increase of 64%. Before sowing, select the seeds to dry before and after noon on the sunny day, drying for 4-5 hours every day, even drying for 2-3 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, the initial temperature of about 56 °C) 6 hours, human urine soaking is to use 25 minutes to place 25 kilograms of human urine 25 kilograms, soaking for 12 hours. When soaking, it is appropriate to use the soaking liquid flush with the seed.
3. Chemical 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 date for the interplanting corn in the suitable sowing period is 7-15 days before the 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 relative soil moisture content of the planted corn should be no less than 70%.
2. Ditch the precise amount of on-demand, according to the average line spacing of about 62 cm (the size of row planting, large row 80 cm, small row 45 cm), with a rake or plow open 5-6 cm deep seeding ditch to 18-20 cm spacing Single seeds, about 5,500 per acre, and covered with wet soil.
Seedling preparation and planting At the same time or later at the same time, 300-400 acre per acre will be planted in the field or in the nutrient bowl. At the time of 5-6 leaves, raise the seedlings with the soil, cut off the upper leaves of the tall seedlings by one-third, and make supplements to the ridges at the lack of seedlings. Pay attention to water filling and compaction during supplementary planting.
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