The first is fine land preparation. Unprotected cultivation plots must be finely-prepared and properly repressed. The optimum soil moisture content for sowing should be kept at about 20%. The second is the deep application of base fertilizer. The base fertilizer should be applied more than 15 cm deep. The amount of fertilizer should not be too much, so that the seed and fertilizer can be separated by more than 5 cm to avoid burned seeds and young roots. The third is the seed selection. Prior to sowing, the seeds were removed from diseased spots, insect-eaten grains, broken grains and impurities to ensure that the purity and the cleanliness of the seeds reached 98%, and the germination rate reached 95% or more, so that large and small grains were sowed in stages. The fourth is seed coating. In order to prevent smutting of corn head and the damage of underground pests, the seed coating agent containing the insecticidal ingredient (carboferrin 7%) was used for coating treatment 2 to 3 days before sowing. The fifth is timely sowing. When the average soil temperature of 5 to 10 cm tillage is stable above 8°C and the soil moisture content is around 20%, it is appropriate to sow early sowing and sowing. When the soil moisture content is lower than 18%, sow water and plant seeds. The land cultivated with conservation tillage is used for direct no-tillage when the ground temperature is appropriate, so that no earth-moving soil is used to avoid loss. The seeds are distributed evenly and cannot be missed and cannot be re-broadcast. After sowing, depending on soil moisture and sowing methods, appropriate repression methods are adopted to ensure soil moisture. Sixth, the appropriate depth of sowing. After sowing, the cover soil is even and can not be deep and shallow, the soil texture is heavy, and the good sensation can be appropriately sowed. The sowing depth is 3 to 3.5 centimeters. The soil texture is loose and the dry sandy loam soil can be properly broadcasted. The depth of sowing is 4 to 6 cm. Seventh, weeding is closed in time. Use pre-emergence method to close off grass blocks, do not wait for rain application, do not apply pesticides after seed germination or seedling emergence, and apply the pesticide within five days after sowing. When applying pesticides, do not increase the amount of the drug. Increase the amount of water in order to form a good closed layer and apply the drug in less than three days. General hectares use 35% atrazine 5 to 6 kg, 90% acetochlor 2 to 2.5 kg, 72% 2? 4-D butyl ester 0.5 kg, and watered 500 to 600 kg spray. Medical Ppe,Surgical Ppe,Medical Protective Coverall,Medical Protective Clothing Taizhou huangyan Yiman industry & trade limited , https://www.yimancoverall.com
How to ensure a seed soaking corn seedlings