Corn is grown in many areas of China. I think many growers have encountered low rates of germination during the planting process. So how do you increase the rate of corn emergence? The following small series teaches you how to plant.
At present, it is the peak season of corn planting, but due to the differences in regional weather conditions, the emergence rate of corn is also very different. At present, corn growers do not reflect the low rate of maize emergence. In fact, if corn emergence rate is high, corn selection is critical. To select varieties with better local performance, the seeds have uniform particle size, no rot, cracks, mildew, no germ, poor seed filling, high water content of the seeds, and some unqualified seeds.
Reasons for low corn emergence rate
First, the relevant seed reasons
: 1. Poor seed quality, low germination rate and germination potential;
2. Improper seed treatment methods;
3. The seeds are not sowed in the wet soil layer;
4. The seed cover is too deep or shallow;
Second, the relevant environmental factors:
1. The drought caused the surface soil moisture to be low;
2. The soil moisture content is too high;
3. Low temperature effects;
4, soil plate knots, especially sticky soil and heavy rain;
5, after the broadcast has not been suppressed, resulting in running, the seeds are not germinated or easy to "hang" after germination;
6. Excessive straw and mechanical seeding quality are not high;
7. Mechanical operation causes lack of seedlings and ridges;
8, seed fertilizer, base fertilizer burning seedlings;
9. Underground pests are harmful;
10. Herbicide phytotoxicity;
Ways to increase the emergence rate of corn:
1, sun-breeding: sunny and warm weather, the seeds will be spread for 3 days to 5 days. It can be sterilized to prevent disease, intensify seed enzyme activity, and also facilitate seed water absorption.
2, human urine soaking: human urine and water mixed with the same amount, soaking 10 kg per 15 kg ~ 20 kg solution, soak for 10 hours to 12 hours, remove, dry.
3. Soaking in triacontanol: the concentration of the solution is 0.05ppm, soaking 10kg per 15kg~20kg solution, soaking for 4 hours to 5 hours, remove the dryness.
4, hot water scalding germination: soaking with 60 ° C ~ 65 ° C hot water, half an hour to remove, into a sack or basket, placed on a hot simmer at 30 ° C germination, half of the seeds "white" can be sown.
5, corn soaking agent (special) soaking: each bag of soaking agent with 3.5 kg of hydration, soaking seeds 2.5 kg, soaking for 10 hours to 12 hours, remove the dry.
6, rare earth seed dressing: rare earth seed dressing can promote germination and root development, enhance the ability to resist stress. Mix 4 kg of rare earth 4 g with water and 20 ml of rice vinegar for 1 kg, mix well while spraying, and mix with the mixture.
7. Soaking seeds with potassium dihydrogen phosphate: Take 50 g of potassium dihydrogen phosphate plus 15 kg to 25 kg of water to prepare a solution, soak seeds for 10 kg, soak for 10 hours, remove the dried and then sow.
8, zinc fertilizer soaking: take 50 grams of zinc sulfate plus water 100 kg into a solution. 10 kg of corn seeds are soaked in every 15 kg to 20 kg of solution. After soaking for 10 hours, remove the dry and sow seeds.
9. Aspirin seed dressing: 4 to 6 aspirin per 4 kg to 5 kg seeds. Put the medicine into powder and dissolve it in water, sprinkle it on the seeds and mix well.
10, zinc fertilizer seed dressing: use 200 grams to 300 grams of zinc sulphate plus water 5 kg, mix 50 kg, stack 2 to 3 hours, spread open air can be planted.
The above is the analysis of the reasons for the low rate of germination of corn in small series, and the planting method. In this small series, we warmly remind all farmers that if the seedlings are found after the seeding of corn, it is necessary to transplant or replant in time so as to lay a good foundation for high yield. .
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