Summer corn is an important crop in autumn in our county. The disaster caused great damage to summer corn in our county. Experts from the corn industry system of the province proposed the post-disaster management advice for the farmers' reference:
I. Post-disaster corn management technical advice (Prof. Cui Yanhong, Hebei Agricultural University)
1, rule out the field water. The fields with obvious water in the fields must try their best to eliminate the water in the fields and reduce the time that the corn plants are soaked.
2, cultivating scattered. For plots that have been drained from the field or that are only affected by waterlogging, cultivator plots can be made in time when the field can enter the ground.
3, make-up quick-effect fertilizer. In view of the fact that my county's summer corn will enter the big bell-mouth period, it is recommended to combine big bell-mouth fertilizer and post-disaster fertilizer management. The land that has not been topdressed with panicle fertilizer can be topdressed with 20-25 kg of urea per acre and the land that has been topdressed with panicle fertilizer can be topped with 5-10 kg of urine per acre. When applying topdressing, it is necessary to deepen the ditch or combine it with cultivator to avoid spreading. Conditionally apply urea 0.5% + potassium dihydrogen phosphate 0.2% for foliar dressing in time when it is clear after rain. Spraying must ensure that urea and potassium dihydrogen phosphate are completely dissolved and mixed to avoid excessive local concentration. Burns intensify the degree of disaster; generally it can be sprayed twice in a row, with intervals of about 7 days.
4. In the case of lands that have fallen on the ground, corresponding field management measures can be taken according to the specific circumstances of the lodging.
1. Summer corn is currently in the period of small bell mouths. Generally, no special management measures need to be taken after lodging. After the rain, it will slowly recover its own growth.
2. In the summer-slumped land that was flooded by overburden, plant leaves were often partially buried in silt, which made it difficult for the plants to restore their upright growth; the land should be removed from the leaves as soon as possible after the disaster, or the soil should be buried with a sickle. The part of the leaves helps the plant to restore its upright growth as soon as possible.
3. The summer sowing of corn, which is deposited in the inner part of the heart and lodging into the sediment, often leads to difficulties in the subsequent extraction of the heart and leaves; this type of plot can be used to remove the parts of the leaves that have deposited into the sediment after the disaster and help the subsequent leaves to be extracted. However, cutting the leaves as little as possible, and try not to hurt the top of the plant growth point.
II. Prevention and control of diseases, pests and weeds in summer corn after the disaster (Professor Zhang Jinlin, Hebei Agricultural University)
1. Raise awareness of weed control: At the moment, most of the summer corn has entered the ridge, and 10% glufosinate water can be used to control weeds through the interdirectional directional spray of corn. However, when glufosinate is used for the inter-row weeding of corn, we should try to reduce the number of nozzles and reduce the amount of chemicals sprayed on corn to prevent phytotoxicity.
2. Prevention and treatment of leaf spot caused mainly by corn brown spot: According to the characteristics of this year's heavy rain, various leaf spot diseases, which are dominated by brown spot disease, will occur. The control of maize brown spot is still based on the use of fungicides. The recommended agents are: (1) 10% difenoconazole water dispersible granules or 12.5% ​​diniconazole WP or 25% propiconazole suspension 2000 -2500 times; (2) 1000-1500 times of 10% azoxystrobin suspension; (3) It is not recommended to use tebuconazole or protective agent of dexamethasone; carbendazim and thiophanate-methyl and other agents have general effects. It is also not recommended.
3, to strengthen the control of pests such as brown-leaf horns and chestleaves: Adults of the brown-browed brood brood have no leaves or leaves on the middle of corn and form reticular holes. When the amount of insects is high, the leaves can be eaten and the veins remain, resulting in loss of yield. Prevention and control suggestions: (1) timely removal of weeds, effectively reduce the risk of brown-leaf thoracic leaf; (2) timely control of adult insecticides, recommended agents: thiamethoxam or pirenone or acetamiprid + cyhalothrin .
Oyster Sauce,Oyster Sauce Seasoning,Qualified Oyster Sauce,Premium Oyster Sauce
Chinese Seasoning (Shandong) Trading Co.,Ltd , https://www.zt-trading.com