Maize dwarf mosaic disease can infect the disease during the whole growth period, and it is most prosperous from the seedling stage to the 7th leaf stage. The leaves of the diseased corn were discolored and chlorotic in the form of mottled mosaics. Early infected seedlings had rotten roots and died prematurely. The comprehensive measures for preventing and treating the disease mainly include the following:
Selection of disease-resistant varieties of disease-free zone selection of seeds and disease-resistant varieties, nurturing strong seedlings.
Adjustment of corn sowing period Spring maize promotes early mulching of mulch, and sowing is completed before the end of April. Summer corn was postponed until mid-June, so as to avoid coincidence of the peak period of aphids and the susceptibility period of maize.
To increase disease resistance, increase organic manure, regulate the amount of nitrogen, phosphorus, and potassium fertilizers, add zinc, iron, and other fertilizers, and do a good job of formula fertilization, which can effectively reduce the occurrence of the disease.
Remove the original infusion source and promptly remove the weeds in the fields, fields and fields, especially the perennial weeds, in order to reduce the number of locust infestations, timely eradicate Hirata, destroy the living environment of the aphids, and reduce the primary sources of infestation. In the seedling stage, the seedlings are combined with the seedlings to remove diseased plants in time, and other crops should be promptly replanted for the severely affected fields to reduce economic losses.
Preventing diseases and insect pests in the wards of corn in the periphytic period using imidacloprid to control aphids on the field and on the ground and weeds on the ground, and spraying antibiotics such as virus clearing for 1 to 2 times during the seedling stage and Chinese manure to supplement the trace fertilizer can effectively prevent The occurrence of disease.
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