At this time, the temperature is between 20-25 ° C, which is most suitable for cutting. Using cutting propagation, the cutting pot is better with a new shallow pot of 20 cm diameter, because it has good gas permeability and is easy to root. The culture soil mixed with 20% humus soil, 40% horse dung, and 40% river sand can be used as a substrate(15 gallon nursery pots wholesale). When cutting, use the shoots that are semi-lignified and developed in the current year as the cuttings. The incision is required to be smooth and tidy. The lower leaves are cut off, leaving only 3-4 leaflets at the top.

In recent years, farmers have applied a large amount of chemical fertilizers, ignoring the combination of organic fertilizers and micro-fertilizers, resulting in soil compaction, alkalization, and increased salting, which changed the physical and chemical properties of the soil. Before the pests, the residues and roots of the crops (including the roots and leaves of the green onions) will produce some toxins, such as organic acids, aldehydes, alcohols and hydrocarbons, during the decomposition of the rot, which will obviously inhibit the crops. Role, affecting the growth of the crop itself.

There is no fatality rate for natural enemies, choose strong resistant varieties, take juice, and the snails and cockroaches can be harmed when the environment is wet(square grow pots). Today, after soaking seeds, germination, the onion itself is particularly strong, it is necessary to pay attention to management, and reasonable control of sowing. Chemical control is the fastest and most efficient way to prevent and cure. Root-feeding pests mainly dominate the roots of the crops in the soil. After the roots of the crops are damaged, they will gradually wither and die.

In winter, the angle of the shed is larger, and the shed is arched to facilitate the use of light. Reasonably matched planting. When planting different varieties of vegetables in plastic greenhouses, they should be rationally planted according to the principle of high in the north and low in the south. When sowing, the seeds are oriented in the same direction(72 cell propagation trays wholesale). When transplanting, the cotyledons are arranged in parallel, and the specifications are strictly cultivated to make the plants grow neatly and minimize the shading between the plants. The autumn and winter scorpion adopts the east and west scorpion, and the winter and spring scorpion adopts the north and south ridges to make the plants receive light evenly.

At the same time, according to the growth of the vines, the number of melons should be adjusted in time to maintain the balance of the fruits. In the greenhouse, the cultivation of zucchini has a long growing period, and the late stage plants enter the aging stage. If the main vine is aging or poorly grown, it can be appropriately selected to leave 1-2 side vines to appear female flowers, which can promote the side vines. The zucchini enters the middle and late growth stages, and thick leaves are piled up in the lower part. The ventilation and light transmission are extremely poor, and it is easy to infect diseases.

A full trim must be performed after each season of flowering. It should be lightly trimmed, and the open residual flowers and thin, overlapping and overlapping branches should be cut off in time, leaving the thick and young branches leaving only 3~6 cm from the base, leaving the outer buds and trimming into a natural happy shape, which makes the plants look beautiful(1 gallon nursery pots bulk). Extend the flowering period. The summer pruning rose flower is the sprouting flower of the grafting rootstock. After the flower, the leaves are cut off the residual flowers and the excess flower buds are removed to reduce the consumption of nutrients.