Corn seeding attention 5 points

With the advent of corn sowing season, in order to improve the quality of sowing and lay a solid foundation for the future harvest, we should focus on the following aspects:

First, scientific selection of seeds for planting varieties is the basis for high yields. This year our province has fully covered the subsidy area for improved varieties of corn. Farmers' friends can purchase good varieties promoted by the agricultural departments above the provincial level, and choose good planting varieties in combination with local cultivation habits and climate characteristics. For fertile and high-water fertile plots, it is possible to select varieties with high yield, such as Dandan 22, Xiuqing 73-1, and Diyu 35. The planting density should be controlled between 3800 and 4500; thin and dry land, medium-low fertility plots and saline-alkali soil should be suitable. The varieties with wide adaptability such as Zhengdan 958 and Gaoyou No. 1 were selected and the planting density was controlled at 4300-4800 plants.

Second, do a good job before sowing the sun seed and pesticide seed dressing. In order to improve the uniformity of seedlings and reduce the size of seedlings caused by different seed sizes, seed selection and drying should be done well before sowing. Some small seeds and seedlings should be removed, and then the seeds should be laid on a mat or cloth in sunny weather. Species (banning in the brick fields and asphalt roads), increase germination potential, and ensure that the emergence of seedlings is neat and consistent. In recent years, with the increase of straw returning area, the occurrence of underground pests has picked up. For the purchase of non-coated seeds, phoxim or methyl isophosphorous can be selected as a seed for preventing SBPH. Induced dwarf disease should also be added together imidacloprid seed dressing. Method is: 40% phoxim 100 ml by adding 10% imidacloprid 20 g water 1 kg mixed with 50 kg of corn seed, mixed and dried after sowing.

Third, grab the time early sowing and improve the quality of sowing. Early sowing of wheat after harvesting can prolong the growth period of corn, which has a significant effect on increasing yield. Raising the uniformity of the population and ensuring that the seedlings are fully grown, homogeneous, and vigorous are important means for achieving high yields of corn. The key lies in improving the quality of sowing and improving the uniformity of seedlings. Emphasis on mechanical sowing, and strive to achieve straight line, broadcast depth and cover the same soil. For the plots with high yield of former stubble wheat and large field straw yield, some straw should be manually removed under the premise of reducing stubble height to ensure that the “seed” is good.

Fourth, the use of fertilizer is scientific and reasonable. In recent years, with the planting of fertilizer, the area of ​​planting fertilizer has been expanding year by year, and the phenomenon of burning seed with planting fertilizer has occurred from time to time. For this reason, the following two points should be taken into consideration when planting fertilizers: 1 The selection of fertilizer varieties should be prudent, and the true slow-release fertilizers (such as Wofute, Dr. Nong) should be selected. The amount of mu should be about 30 kg; The choice of diammonium phosphate and potassium chloride or potassium sulfate, the amount of mu are 10 to 15 kg; if the use of ordinary compound fertilizer, the amount of mu not more than 15 to 20 kg; if the use of urea, mu dosage of not more than 7.5 kg. 2 Seed and fertilizer should be more than 5 cm apart.

5. Watering and controlling weeds in time after sowing. Before planting, please contact the watering matters to ensure that the water is poured in 2 to 3 days after sowing, to prevent the emergence of buds and dead seedlings due to watering. After the watering, the temperature in the field can be large enough to select the 48% Ding A mixture in time. Or 42% of the mixture of 125 to 170 ml/mu, spraying 30 to 45 kg of water, and adding 100 ml/mu of paraquat in the field to achieve a single kill, in order to maintain the integrity of the layer of film and enhance weeding. The effect is that the field spray must be reversed and the water consumption per mu should not be less than 30 kg.

In addition, it is also necessary to spray imidacloprid and beta-cypermethrin from the corn seedlings to prevent P. falciparum, P. thunbergii, and larvae and other pests, and to ensure the early growth of strong seedlings.