Integrated management techniques of bulbous flowers (XIX), understanding cultivation techniques of edible fungi

The scorched buds of leaves and the dry shrinkage of buds show that lilies will fall when the flower buds grow to 1 to 2 cm long. The color of the bud changes to light green, at the same time, the pedicel connected to the stem shortens, and then the flower bud falls off. In spring, the low buds are affected first, while in autumn, the high buds fall off first. Dry shrinkage of buds occurs throughout the growing period. The buds turn completely white and dry, and these dry buds sometimes fall off. If the bud shrinks in the early stage of plant development, tiny white spots will appear in the leaf axils later. Etiology sprouting occurs when plants do not get enough light. Under the condition of lack of light, the stamens in the bud produce ethylene, which leads to bud abortion. If the root living conditions are poor, such as dry soil, it will lead to the emergence of bud shrinkage. The control method should not cultivate the varieties which are easy to sprout in the poor light environment. In order to prevent the bud from drying and shrinking, the bulb should not be dried during cultivation. Make sure the bulbs have good roots and let them grow in the most suitable conditions possible, especially light and transpiration. The scorching of leaves occurs before the appearance of flower buds. First, the young leaves curl inward, and then green-yellow to white spots appear on the scorched leaves. If the scorch is light, the plant can continue to grow, but if the scorch is serious, the white spots can turn brown and the leaves bend. Eventually all the leaves and buds will fall off and the plant will stop developing. The cause of the disease is that the leaves scorch when the balance between water absorption and transpiration is destroyed, which is the result of calcium deficiency in young leaf cells caused by insufficient water absorption or transpiration. Poor root system, high soil salt content, rapid growth relative to the upper part of the root plant and sharp changes in relative humidity in the greenhouse will lead to leaf scorch. The sensitivity varies greatly due to the variety and bulb size, and the large bulb is more sensitive than the small bulb. The control methods should be used to control the diseases and pests that damage the root system. Keep the soil moist before planting. It is best not to plant susceptible varieties, if only such varieties can be used, large bulbs should not be used as far as possible. To plant bulbs with good roots, the planting depth should be appropriate, and there should be a soil layer 6 to 10 centimeters thick above the bulbs. Avoid large changes in temperature and relative humidity in the greenhouse, and try to keep the relative humidity at about 75%. To prevent excessive growth. In the first 4 weeks, the temperature of the Asian hybrid was kept at 10 ℃ to 12 ℃, while that of the oriental hybrid was 15 ℃. It was suggested that the rooting chamber should be used in box cultivation. Avoid excessive transpiration by shading and spray water several times a day on a sunny day. (19) (Netherlands International bulbous Flower Centre)