Cultivation experience of Maize covered with plastic Film in mountainous area
In view of the serious drought in Taiyi Township of Dali City since last year, plastic film mulching is an effective way to increase drought resistance and seedling income of maize. Maize plastic film mulching has the following effects: (1) temperature increase: 3.9 ℃ at seedling stage, 3.3 ℃ at jointing stage, 1.3 ℃ at heading stage, and effective accumulated temperature is higher. (2) moisturizing: the soil water content of corn covered with plastic film is more than that of open field, and its water storage capacity is strong. (3) increase the light intensity in the field. (4) inhibit the growth of weeds. (5) increase production: 50ml / mu and 70kg / mu.
1. Cultivation requirements:
1, choose good plastic film: choose 0.008 mm plastic film, film width 60cm or 70cm, 2.5kg per mu.
2. Fine soil preparation to remove the roots of beans, wheat and other crops before. Apply sufficient base fertilizer, 1000 kg farm manure, 10 kg urea and 30 kg calcium per mu.
3. Level the land, sow seeds in wide and narrow rows, 60cm in large rows and 40cm in small rows.
2. Cultivation methods:
The main results are as follows: 1. Take the order of sowing first and then covering the film, sowing 3 grains of 2 murmurs in each hole (to ensure that the seedlings are uniform and uniform, so as to facilitate the seedlings), the plant distance is 7 Murray 8 inches, and the soil cover is strict.
2. Spraying pesticides such as enemy killing or kung fu before covering the film to control underground pests.
3. Cover the membrane.
4. after 7 days of sowing, the seedling should be checked to cover the soil to make up the dew.
3. Management measures:
The main results are as follows: 1. After the emergence of plastic film corn, pesticides should be sprayed in time to control the harm of ground tiger, so as to achieve 3-leaf seedlings and 5-leaf seedlings.
2. Fertilization: 20 kg urea per mu was applied to cover the soil strictly in the period from 6.5leaf to 7th leaf, and 30kg urea was applied in time when the maize plant entered the 10.5?D11 leaf, combined with big soil.
- Prev
Key Technical measures for increasing yield in the later stage of planting Maize
In order to obtain high yield of maize, the following four key techniques should be done well in the later growth stage. 1. After pulling out the booting ear of empty stalk corn, we should seize the time to make the empty stalk which is weak in growth, slender in plant, not budding or although budding, but the ear can not grow and is not silked and pollinated.
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Field Management measures in the Middle and late stage of planting Summer Maize
1) timely ploughing and topdressing to meet the nutrient demand. During the period from jointing to small trumpet mouth (6 leaves to 10 leaves), fertilization was carried out in combination with mid-tillage. Through mid-ploughing, killing wheat stubble to loosen the soil and weed. Topdressing should be based on nitrogen fertilizer, not on the surface, but should be concentrated near the root.
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