First, choose the equipment. It is recommended to use the corn no-tillage planter in the Catalogue of Shandong Agricultural Machinery Purchase Subsidy Products. No-till corn seeders have air-suction precision seeders, warehousing rotary seeders and nest drill seed drills. They can be selected according to economic conditions and needs. The implementation of precision corn seeding, can be used without seedlings, corn seed germination rate to reach more than 95% to ensure corn quality.
Second, increase the planting density. The planting density of corn should be compatible with the variety requirements. The general sowing volume should be 2.5-3.5 kg/mu, the density density density of tightly-compacted corn should reach 4200-4700 plants/mu, and the density of large ear-type plants should reach 3200-3700 plants/mu. , High-yield fields increase appropriately.
Third, regulate corn spacing. According to the requirements of agronomy and corn harvesters, adhere to the principle of combining agricultural machinery and agronomy, and vigorously popularize corn and other row spacing, no-tillage sowing, sowing spacing is generally 60 to 70 cm, in order to facilitate corn harvest and increase production. In the case of a certain row spacing, the planting density required by different corn varieties can be achieved by adjusting the planting spacing.
Fourth, the correct adjustment of equipment. According to the instruction manual, properly adjust the displacement and consistency of the seeder (fertilizer) to ensure the planting density; adjust the upper limit position of the repressor wheel to ensure the repression effect; adjust the level of the sowing frame to ensure that the sowing depth is consistent.
Fifth, timely sowing and sowing. From southwest of Shandong Province to the Jiaodong Peninsula, the sowing date of corn is suitable from June 1st to 20th. After harvesting wheat, timely sowing and sowing, it is best to sow the same day of the day of sowing to promote early-onset corn. When the sensation is poor, it can be sowed after the first sowing; dry areas should be robbed sowing.
Six, control the depth of sowing. Under suitable conditions, the sowing depth is generally controlled at 3 to 5 cm, and the sowing depth in sand and arid areas should be appropriately increased by 1 to 2 cm.
Seven, rational application of fertilizer. The depth of fertilization is generally 8 to 10 cm, and the vertical distance between the upper and lower seeds is more than 5 cm. It is better to apply the fertilizer and seed in different vertical planes. Fertilizers are preferably granular composite fertilizers with a fertilization of 10-20 kg/mu. In order to reduce labor, where conditions permit, slow-release fertilizers may be used, and one-time application may be made with the sowing operation.
Eighth pilot trial. Before the normal operation, try to broadcast a job itinerary. Check the amount of sowing, depth of sowing, amount of fertilization, depth of fertilization, presence or absence of leakage of seed and fertilizer, and check the repression of overburden, and if necessary, make appropriate adjustments.
9. Observe the work during the operation. Observe the entanglement of straw jams at any time, find abnormalities, and eliminate and adjust them in a timely manner. The unit is not to be regressed under working conditions, and the speed should be reduced when cornering the ground, and it should be lifted and landed in a timely manner at the planned heading line.
X. Spray chemical herbicides and pharmaceuticals at appropriate times. Spray the chemical herbicide on the same day or within 3 days after sowing, and evenly cover the surface of the soil. For the land with the number of stickworms larger than 5/square, add pesticides and spray them once evenly.
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