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Essentials for transplanting seedlings of spring maize
At present, we are about to enter the sowing period of spring corn, and we should do a good job of transplanting seedlings in production to promote the early and stable growth of corn and achieve high and stable yields. The varieties used for harvesting tender corn sticks should be selected from the varieties of Jiangnan calyx and Suyujing which are of good quality; and the varieties with high yields such as Zhengyu 5 should be selected for the harvest of maize kernels. Fertilizer seedbeds are transplanted with nutritious seedlings and seedlings. For each mu of field, there is a seedbed with a width of 1.5 meters and a length of 20 meters. After applying 250 kg of organic manure, 2.5 kg of compound fertilizer and 2.5 kg of urea in the bed, turn it over. Make oysters and cover the shed in time. Using plastic tray seedlings for transplanting seedlings, the seedbeds with a width of 1.5 meters and a length of 2.2 meters are provided for each mu of field, and 561 holes of rice smashing trays are provided. After the planting, the field was timely fertilized and soil preparation was completed. A 65-80 cm wide mulch film was placed on the transplanting line to ensure timely transplanting. At present, more rain, it is advisable to vigorously promote the application of plate-fed milk-seedling mulching methods to resist natural disasters. Seed treatment Seedling transplanting per acre field seed amount of 1.5 kg, the amount of seed used for live broadcast 2.5 to 3 kg. Before sowing, select sunny days for 2 to 3 days to enhance seed activity and increase germination rate. Grade sowing to increase the rate of emergence and uniformity. The timely sowing of spring corn planting due to different sowing methods vary. In Puyang, the seedlings were transplanted and used for transplanting. The suitable sowing date was March 15-20, the seedling age was 15 days, the transplanting leafage was 1 leaf 1 heart to 2 leaf leafage before; the transplanted seedlings were transplanted and the appropriate seeding period was March 20-25, seedling age 30 days, transplanting leaf age 3 leaf 1 heart period; live corn is generally sown at the end of March and early April, using open shallow trench on demand. The green corn sticks can be sowed in batches, and the sowing interval is 10-15 days to extend the time to market. Shizuo basal fertilizer usually applies 1250 kg of organic fertilizer, 25 kg of ternary compound fertilizer, and 25 kg of ammonium bicarbonate per acre 10 days before transplanting. Mastering the density of spring corn is suitable for intercropping, and the density of transplanting between plots is different. In multi-cooking, such as watermelon intercropping corn, two rows of corn should be planted on both sides of the trench, with a plant spacing of 23 cm and about 1,500 plants per acre. For other intercropping maize plants, a small row spacing of 50 cm and a large row spacing of 67 cm should be maintained. Plant spacing 17 to 20 cm, planted around 5000 per acre. The transplanted corn was planted in open space, and the width was 2.3 meters wide. The width of the groove was 27 centimeters. Each row was planted with 4 rows. The plant spacing was 23 centimeters and about 5000 plants were planted per acre. Control pests Pests on early spring corn are mainly ground tigers and aphids. Prevention of tigers in the field can be used at the corn seedling bait (with 90% crystal trichlorfon 0.5 kg water 2.5 to 5 kg sprayed on 50 kg of fried rapeseed cake or cottonseed cake) hunted bait, depending on the number of baits; You can use 48% chlorpyrifos EC 100 ml water 50 kg per mu spray or splash on the ground. Control of aphids can be used imidacloprid plus water spray.