Corn film high-yield cultivation technology

In 2005, the area of ​​coated corn in Ning'an Farm of Heilongjiang Province was 233 hectares. Due to the high rate of cultivation techniques, the average yield of covered corn was 750kg/667 square meters, which was 200kg higher than that of live corn. The coated corn was more than the live corn per hectare. Production of 3.75t. In order to summarize and explore the cultivation technology of coated corn, after years of cultivation, we believe that the coated corn can make full use of the accumulated temperature of the activity and greatly increase the yield of corn in the cold. That is, drought resistance and drought resistance, high yield and stable yield, and its cultivation techniques are mainly:

First, choose the land

The main components are soybean meal and wheat bran, and the soil is rectified, and the soil is covered with the residue.

Second, early filming, competition for temperature, high yield

Corn can increase soil temperature after filming. According to the survey, the average temperature of 20cm ploughed soil is 2°C higher than that of bare land. The mulched corn is planted at an appropriate time, making full use of natural heat energy, increasing the accumulated temperature of the plant and increasing the 100-grain weight. This year, I grabbed the game early, and the mulched corn began to be planted on April 13 and ended on April 20. The 100-grain weight was found to increase by 3 to 5 g compared with the previous year. At the same time, it was found that the coated corn had strong resistance to freezing damage through early sowing. The covered corn suffered a freeze injury on May 3, and suffered severe frost damage for many years on May 10, causing almost all of the above-ground parts of the corn seedlings to freeze to death, but after 3 days, new seedlings were grown, and the corn seedlings were found after investigation. The growth point is in the membrane, and the membrane has a protective effect on the growth point. When the freezing damage occurs, the main growth point is not bad. At the same time, it was found that the shallow freezing weight of the seeds was soaked, the freezing weight of the seeds was poor, and the freezing damage was again caused by freezing, and the lack of seedlings caused by secondary frost damage was about 10%. If the standard operation was increased and the number of designed seedlings was increased, the yield was not affected. Secondly, the corn film is resistant to drought, mites and protects against the threat of natural disasters. After corn mulching, it can resist drought and raise moisture, control the evaporation of soil moisture, and in the case of serious shortage of sputum at the end of spring, it can plant seedlings at one time. From May 8 to June 25, the rainfall is only 33.7mm in 48 days. It can also grow normally and develop, showing strong drought resistance. According to the survey, the moisture content of coated corn increased by 30% to 50% compared with that of live corn.

Third, choose the right variety to win high yield

The two varieties, Baidan 31 and Sizao 19, were selected, and the seeds were seeded after selection and seed dressing, and the film was harvested once with the laminating machine produced on the farm. This variety of Baidan 31 has been planted in a large area for two years in our field, and the yield traits are very good, with an average yield of 800kg/667 square meters. The breeding date of this variety is 129-132d, the plant height is 2.65m, the grain is half-horse-shaped, and the 100-grain weight is about 35g.

Fourth, take appropriate planting methods and win high yields

Covered corn and wheat, soybean intercropping, make full use of the marginal effect, good ventilation and light plus 1.3m large scorpion performance bar large particles, small water, high 100-grain weight, the number of seedlings to 60,000 plants for reasonable density. In the autumn turf ploughing, according to a certain ratio of intercropping, the ridge type with different sizes is formed, that is, the mulched corn ridge distance is 1.3-1.4 m, and the intercropping soybean or potato ridge distance is 0.65-0.7 m or 6 ridge 8 m wide corn. , 10.8m wide wheat.

5. Scientific fertilization, fertilizer production

Corn is a fertile crop that requires a lot of nutrients throughout the growth period. The total fertilization of coated corn is 80kg of potassium chloride per hectare, 180kg of three feeds, and 470kg of urea (commodity amount) is 110kg per hectare and 60kg of potassium sulfate (commercial quantity). The total amount of fertilization method is 150kg urea for topdressing. The rest of the amount is disposable ridges and ridges, and the ridges are double-fertilized. The row spacing is 40cm. Each row is divided into upper and lower layers. The depth is 8~10cm and the lower layer is 14~16cm. The ratio is 4:6. After ridges, timely suppression, to reach the state to be broadcast, in order to facilitate storage, preservation, and fertilizer. In the 8-9 leaf stage of corn, artificially topdressing urea 150kg/ha (commercial quantity) with fertilizer applicator or planting distance of 7-8cm, spraying potassium dihydrogen phosphate 3kg/ha in the corn horn period, combined with pest control.

6. Strengthen field management and increase corn production

1. Before seeding and filming, the formula Duer 1.5L+ Bao received 10g/ha, and the dosage is less than 1/4 of the pre-emergence application after direct seeding.

2. After the film is mulched, check the film in time to the field, and find that the place that is blown away by the wind should be pressed with soil pressure in time to prevent the wind from spreading.

3. Check seedlings and seedlings in time. Due to large-area mechanical film mulching, some mechanical operations are not standard, so that the seedling holes are displaced, and the seedlings cannot be arched out in time. The seedlings should be checked in time to prevent baking, and the seedlings should be pressed. Some soil, sealed wells.

Seven, timely harvest, increase production

Corn is harvested too early, affecting maturity and reducing production. It will fall down on September 25 this year, and it will be good on October 1st. When the field cools and the moisture reaches about 20%, it will be threshed. It is necessary to carefully collect and harvest.