Key points of Management of late sowing Summer Maize

In recent years, due to the late harvest of previous crops, dry climate, poor sowing quality and other factors, maize seedling emergence is poor, irregular, and the growth is weak. As the saying goes, it is very important to strengthen corn field management, promote plant growth and ensure that late sowing does not reduce yield. In management, we should focus on early and promotion, and do a good job in the following points:

First, dry irrigation early irrigation to promote seedling water, pull water, booting water, filling water four key water. According to soil moisture, four water should be irrigated 5-7 days earlier than normal sown corn in order to meet the water needs of each growth stage and promote the rapid growth of plants.

Second, early topdressing, early application of stalk fertilizer, spike fertilizer, grain fertilizer, and foliar fertilizer. For late sowing corn, due to the late sowing and the postponement of growth period, topdressing should be applied 5-7 days earlier to promote growth. At the same time, combine fertilization 667 square meters with 0.3% Mel 0.4% potassium dihydrogen phosphate aqueous solution or 0.2% Mel 0.3% urea aqueous solution; 1:1 biogas slurry foliar fertilizer to promote nutrient transport and increase grain weight. Spray every 7-10 days for 2-3 times.

Third, early seedlings, fixed seedlings, check seedlings to make up for the emergence of corn seedlings, timely check the seedlings to fill the gaps, if found that the lack of seedlings should be carried out as soon as possible. The inter-seedling can be ahead of 3 leaves, and the fixed seedling can be ahead of 5 leaves, so as to reduce the nutrient consumption and solve the contradiction of competing for more fertilizer and water.

4. the main diseases of corn for early control of diseases and insect pests are rough shrinkage disease, smut disease, stem rot, etc.; pests mainly include corn borer, armyworm, golden needle worm, ground tiger, etc., which should be detected and controlled early to reduce the number of diseased plants and insect plants in the field and increase the number of healthy plants.

Reasonable increasing density because late sowing corn missed the best sowing time, it will have an impact on the yield, and the yield can be increased by appropriately increasing the density of remaining seedlings. Generally increase the number of plants by 10-15% per 667 square meters.

6. timely late harvest under the premise of not affecting the sowing of the next crop, appropriate late harvest should play a certain role in improving the yield and quality of maize, or harvest with stalks, promote grain physiological ripening, and achieve the effect of increasing yield.