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During the entire growth and development process of s […]
During the entire growth and development process of stevia, including seedling raising, transplanting, field management, harvesting, chemical weeding, and pest control. Among them, the nursery is the foundation. Because the stevia seeds are small, the false alarm rate is high, and the time from germination to emergence is long, so a slight error can reduce the emergence rate and increase the cost of emergence. Therefore, we should cultivate good and sufficient seedlings according to local conditions. Due to the different sowing times in different regions, North China sowed in early March and mid-April in summer. The northeast and northwest regions sowed more in early and mid-April, and Sichuan and Hubei sowed more in mid-and late-March. Stevia can grow for 50-60 days in spring and 40-50 days in summer. When the seedlings have developed a sixth pair of true leaves near the field setting, they can be transplanted with a stevia vegetable planter. Do not water for five days before transplanting. The standard for strong seedlings: 5-6 pairs of true leaves, plant height 12-15cm, stem diameter >3mm, stem semi-lignified; leaves plump, dark green, top leaves concave, 5-7 secondary roots, 2-3 leaf axils, True leaf branches germinate.
If stevia is planted and harvested according to the technical requirements, the qualified dry leaf yield per mu is more than 500 kilograms in spring and 400 kilograms in summer. Purchasing standards for dried stevia leaves: leaves are relatively complete, normal, green, no mildew, no disease, no residue, no glycoside content ≥ 10%, moisture content ≤ 5% ≤ 5% impurity content. Transplantation is to achieve the collection standard key link. The main problems with economic transplants are time-consuming and inefficient. Technically, we should control the basic seedlings and water them in time. Generally speaking, the transplanting row spacing of stevia vegetable planter is controlled at 25-50cm. Nearly 20,000 plants/mu are planted in spring, and more than 20,000 plants/mu are planted in summer. Spring-sown stevia can be transplanted when the average temperature is stable at 12-15 degrees and the ground temperature exceeds 10 degrees. The transplanting depth should be one-third of the height of the seedlings. Pay attention to watering when planting, water once in 3 days, slow down the growth rate of seedlings and improve the survival rate.
Well, I will share with you the importance of stevia vegetable planter here. If you have any questions, you can consult our company!