China Extract Powder For Use As Dietary Supplement Extract Powder, Extract Powder Manufacturer Shaanxi Kang New Pharmaceutical co., Ltd. , https://www.kangnewpharmas.com
How to carry out vegetable nursery in spring
In the spring, the weather is cold, the temperature is low, and the light is weak. The following issues should be noted when cultivating the age-appropriate seedlings. Prevent bad species. The minimum temperature for seed germination of fruit vegetables is 11-12°C. Leaf vegetables are 0-4 °C. Under normal circumstances, no seedlings appeared after 7 days sowing, indicating that the seeds had rotted. The preventive measures are to select sowing in sunny and warm weather, use electric hot-bed or hot-breeding nursery, thicken the cover, etc. to increase seedbed temperature. Prevent the formation of "hats". "Dai Miao" is when the cotyledons unearthed, the belt was taken out of the soil, like a hat on the top of the cotyledon, which affects the normal development and photosynthesis of the cotyledon. The reason is that bed soil is too dry and the soil is too thin. Preventive measures are that the bottom water of the seedbed should be poured, and the thickness of the cover soil should be appropriate. Generally, the small-grained seeds cover soil 1.5 to 1.5 centimeters, the medium-grained seeds 1.5 to 2 centimeters, and the large seeds 3 to 4 centimeters. Before sowing until emergence, the bed covers the mulch to keep the soil moist. Prevent cold roots, roots and roots. The proportion of organic fertilizer and bed soil on the green bed is generally 1 to 1. The use of organic fertilizers that have not been decomposed or excessive fertilization may cause burning of roots. After the seedlings have been burned, the edges of the leaves are yellow and the leaves are shriveled. Once root burning occurs, water can be poured into the pot to reduce the concentration of fertilizer and increase ventilation and humidity. The roots of cold roots and roots are caused by the low temperature and high humidity of the bed soil. Its performance is that the leaves are wilting and the seedlings stop growing. The preventive measures are to increase the seedbed temperature, reduce the amount of watering, conduct cultivating tillage, and reduce the humidity through ventilation. Prevent the formation of rigid seedlings. There are two reasons for the formation: First, cold early spring, lower soil temperature in the seedbed, and slow root growth to form rigid seedlings; secondly, in the late stage of nursery, in order to curb the leggy, use less water or no watering method, resulting in drought The root development of the seedlings was severely affected and a rigid seedling was formed. Preventive measures are to increase seedbed temperature in the early stage and promote root development. In the late stage of nursery, if the seedlings are long, the seedbed temperature should be reduced, the light intensity and illumination time should be increased, the ventilation should be increased, and no watering or watering methods should be adopted to control the seedling growth. Prevent flash seedlings. In spring, with the increase of the outside temperature and the temperature inside the nursery bed, the amount of ventilation needs to be increased. When the air temperature in the shed is higher than 25°C, if it is ventilated from the bottom of the shed, the sweeping wind will injure the seedlings. This phenomenon flashes. Prevention measures include timely ventilation when the shed temperature reaches 20°C. When the shed temperature is higher than 25°C, it is necessary to pull ventilation, that is, to ventilate at the height of the shed, and adjust the seedbed temperature by using the size of the air outlet and the length of the air release time. Do not ventilate the shed. Prevent seedlings from being leggy. In addition to increasing ventilation, prolonging ventilation time, increasing light intensity and low-temperature training, measures to prevent leggy can also be controlled by spraying plant growth regulators (such as chlormequat, etc.), and chlormequat can enhance the cold resistance of seedlings. Sexuality and disease resistance.
Next Article
Cartoon Wound Care Plaster
Prev Article
High Quality Sample Cups for Simens