Prevention of wheat freeze injury and remedial measures
1. Freezing damage in winter In winter, freezing injury is the result of cold injury caused by the coldness of cold during winter and winter. The remedial measures for the occurrence of winter freezing injury: First, topdressing nitrogen fertilizers in time to promote the rapid growth of small tillers. The second is to strengthen the management of fertilizer and water in the middle and later stages to prevent premature aging.
Second, the early spring freeze injury (cold spring) Early spring freeze injury (downcast cold) refers to the wheat in the "spring" season to enter the return green joint period, due to the arrival of cold and cooling, the surface temperature dropped below 0 °C, the occurrence of frost hazards. The main measures: First, moderate growth inhibition of growth in wheat fields, the main measure is to suppress the early spring suppression, and apply boosting prime. The second is to prevent early spring frost damage. The third is topdressing nitrogen fertilizer and watering after frost damage in early spring.
Third, the low-temperature chilling wheat grows into the booting stage, because of the harm caused by the low temperature around zero is called low-temperature chilling injury. Preventive measures: Irrigation before the onset of cold temperatures can prevent and reduce the occurrence of cold damage. Remedial measures after being chilled and chilled should be watered in time, and top-dressing should be carried out as appropriate to ensure normal wheat grouting and increase grain weight.
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