First, the management of the seedbed before planting
1, 5-7 days before planting, the shed will not need to be warmed, as long as the antifreeze can be done. The seedbed temperature should be controlled at 22-25°C during the day and around 15°C at night.
2. Ventilate the seedlings one week in advance, which is more conducive to adapting the seedlings to the temperature of the field.
3, the best 2-3 days before planting to the melon seedlings appropriate pouring some water, but the amount of water should not be too large.
4, spraying a wedding drug, can play a multiplier effect. With fungicides and insecticides as the mainstay, we can choose Teflon, Golden Manchu, Baitai, Ami Miao and so on.
Second, the work of Daejeon before planting
1. Deeply turn over the land 10-15 days before planting to achieve a deep spin, then do the trick, and then spread 2.5-3 meters wide.
2, can be used when the base fertilizer can be applied, per acre can be cooked cooked rapeseed cake or sesame seed cake or soybean meal 150-200 pounds, superphosphate 50-80 pounds, urea 20-30 pounds, potassium sulfate compound fertilizer 80-100 catty. Once applied, it is best to use three-channel fertilization. For example, a 2.5-meter raft is ridged in the middle, three trenches are opened, and a 40-cm interval is used to apply fertilizer into the trench. When fertilizing, 200-400 g of large-grain boron can be used and sprinkled with the fertilizer into the ditch (control according to the instructions). The depth of ditch must reach 25 cm, and the application is too shallow, which will result in rapid loss of fertilizer and low utilization rate. Remember that melon seedlings should not be directly planted on fertilizers.
3. After the fertilizer is applied, the ditch should cover the soil, and then do ridges and ridges. When the sensation is good, close the soil with 30 ml per mu for Jinduer or Shi Tian. Closed weed control in watermelon field can be divided into two steps: the first step is to close the ridge surface first; the second step is to close the vacant part, and the closing time should be selected to grow 40 centimeters in the vine and build a small shed. prior to.
4, to be sealed 7-10 days in advance, to increase the temperature of the greenhouse to facilitate the temperature when planting to reach 12 °C, to avoid freezing damage, but also reduce the time of seedlings.
5. For closed greenhouses, it is recommended to ventilate the day before planting so as to evacuate toxic gases and excess moisture in the shed. In addition, try to choose the sunny morning when planting.
Third, attention should be paid when planting:
1, melon seedlings must be transplanted with soil, try not to loosen the soil within the nutrients, so that it can be handled gently, not to hurt the root system.
2, planting should not be too deep, negative is not conducive to the root absorption of oxygen. If a grafted seedling is used, it will cause the roots to contact the soil and absorb germs, thus affecting its quality.
3, must be separated from the diseased seedlings and healthy seedlings, diseased seedlings are not removed; seedlings and seedlings separated, so easy to manage.
4, soil turf litter should not be too large, so as not to affect root growth.
5. Root water should be poured in order to promote rooting after planting.
6, must be covered in time after planting mulch, melon seedlings.
7, due to the current temperature is unstable, so when the colonization of the greenhouse to be covered with a small arch. The span of the arch shed is 1.2 meters and the height reaches 60-80 centimeters. Therefore, the arch shed pole needs to be 2-2.2 meters long, and the width of the shed film is 2.2 meters as far as possible.
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