Seedbed preparation. 2 to 3 days before planting seedlings, loose soil and dry land near Honda are used as seedbeds. The first deep excavation and leveling is done to make the seedbed 1.3 to 1.7 meters wide. 2 grams of phoxim per square meter to prevent underground pests.
Nutrition soil preparation. With 30% to 40% of the decomposed organic slag, 60% to 70% of the fertile fine soil as the substrate, transplanting no less than 150 kg of material soil per mu of field, and adding 1.5 kg of superphosphate, 0.15 kg of urea After mixing evenly, it is advisable to add manure water to “push into a group and touch the ground to disperseâ€.
Seedlings. The soil with high organic matter content, loose alluvial soil, yam xi miao, and purple soil developed in Penglai town can be selected as floppy seedling transplanting technology (100 holes per piece); purple soil developed from yellow soil, red soil and Suining group with heavy soil. Such as using nutrition cup (bag, tube) seedling technology. The prepared nutrient soil is loaded into 80% of the nutrition cup or floppy disk and compacted in the seedbed. After sowing 1 or 2 seeds per cup or per well, cover the seed with the sphagnum and the thickness is not less than 1 cm.
Seed management. Prepare bamboo shoots with a length of 2 meters on the bed and cover it with a 2 meter wide agricultural film. Use soil compaction around the soil to reduce water loss. The temperature in the film before the needle was controlled below 35°C; after the needle was out, the temperature in the film was controlled below 25°C to prevent burning of the seedlings. If for some reason (drought or heavy rain, etc.) cannot be timely transplanted, the floppy disk or cup must be moved in time to cut off the root seedlings.
Transplanting technology. The best transplanting period for corn seedlings is "one leaf and one heart." More than "three leaf one heart" can be used when transplanting 0.1 jin / square meter of urea water added "send marry fertilizer water." According to the planned spacing, grading, orientation, and transplanting were carried out. After the planting, the soil covering the nest should be no less than 3 cm to prevent drought exposure to the fertilizer and affect the root growth.
The technology is mainly suitable for China's southwestern mountainous regions such as Yunnan, Guizhou, Sichuan, and Chongqing. When the local suitable sowing period arrives, seasonal sowing can not be sowed in time. The germination, emergence and seedling stage of the corn can be concentrated by adopting seedling transplanting techniques. Managed in seedbeds to avoid hazards and timely transplants after rainfall. If combined with Daejeon mulching technology, the effect of drought-resistance and yield increase is even more pronounced.
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