Culture methods and matters needing attention of Wang Lian

Wang lotus is a large perennial or annual floating-leaf herb of the genus Nymphaeaceae. It is famous for its huge hall leaves and beautiful fragrant flowers. The leaf viewing period is 150 days and the flowering period is 90 days. If the king lotus is arranged with lotus, water lilies and other aquatic plants, it will form a perfect and unique water landscape, which is unforgettable. Let's take a look at the breeding methods and matters needing attention of Wang lotus.

The growth habits of Wang Lian

Wanglian is a typical tropical plant, which likes high temperature and high humidity, and its cold tolerance is very poor. when the temperature drops to 20 ℃, its growth stagnates. There was chilling injury when the temperature dropped to about 14 ℃, and the temperature dropped to about 8 ℃ and died of cold. Like fertile and deep sludge, but do not like too deep water, the sludge in the cultivation pool should be more than 50 cm deep, and the water depth is not more than 1 meter. When planting, apply enough barnyard manure or cake fertilizer, apply topdressing for 1 or 2 times during leaf flowering, and stop fertilizing after autumn. Like the light, there should be plenty of sunshine on the cultivation surface, and the key technology of artificial cultivation is to survive the winter and prevent the cold.

The breeding method of Wang Lian

1. Sowing: Wanglian's seeds matured in the middle of October, collected and washed and stored in clean water. In the middle and lower reaches of the Yangtze River, indoor germination was carried out with 25: 28 ℃ heating in the first ten days of April. The seeds could be placed in a petri dish with a depth of 2.5 to 3.0cm, changed water once a day, and germinated one week after sowing.

2. Raising seedlings: after about 20 days, the newborn seedlings of Wang lotus began to be transplanted into the basin to raise seedlings. A small basin with a diameter of about 10 cm was filled with finer mud and a small amount of sand. It should not be too full, one plant per pot. The planting depth should be slightly higher than the soil surface of the seed shell and is being put into warm water to make the leaves float on the surface of the water.

The Culture method of Wang Lian

1. Soil: Wang Lianxi has slightly acidic to neutral fertile soil. One plant needs 1.5 million cubic meters of soil. Sufficient base fertilizer must be applied before entering the pond, preferably green manure. Cylinder planting is easy to cause malnutrition and affect the growth of leaves and flowers. When applying base fertilizer, you should accompany an appropriate amount of pond mud, compound fertilizer and about 3 kg of hooves, and add some dung, cakes and so on, which can also make the soil loose.

2. Planting: Wanglian is a positive aquatic flower plant. The selection pool should be oriented to the sun and shelter from the wind to ensure that Wanglianchi has sufficient light. There are two kinds of transplanting, one is directly transplanting in the pond, and the whole plant occupies about 30 square meters of the pond. Before transplanting, the pond must be drained, the pool must be cleaned, the drainage and irrigation device must be installed, and the water level must be controlled. The other is indirect transplanting, first planting the seedlings into the tank, and then putting the tank into the pond.

3. Management: Wanglian has to go through vegetative growth period, flowering and fruiting stage, which includes seedling stage and fast-growing stage. These periods are important periods for Wanglian's growth and must be carefully managed. At first, the seedlings are not adaptable in the open field, there is a large temperature difference between day and night, and the leaves may rot in case of overcast and rain, so the film should be opened in sunny days and covered at night until mid-June.

4. Topdressing: Wanglian should be topdressing every 10 days near the end of seedling stage after planting, mainly compound fertilizer. When it comes to the fast-growing period, fertilizer should be applied every 5 days. After flowering, due to the hot weather and high temperature, the plant grows vigorously and the flowering rate is high. When fertilizing, about 20 grams of available phosphate fertilizer can be buried not far from the root in a small film bag with holes to facilitate the balanced development of the root system.

5. Water level: Wanglian is a shallow aquatic plant, the water level generally does not exceed 0.4 meters at the top of the plant stem, and the variation range of water level should be controlled within 0.3 meters. In the seedling stage after transplantation, the water level should be adjusted according to the growth status of the seedlings. In the pond, the water plants that wrap around the lotus leaves, such as moss, sponges, duckweed, etc., should always be removed to keep the water clean and free up to allow the new leaves to grow.

6. Lighting: Wang Lian likes the light. When cultivated in the greenhouse in spring, the sun is not enough. A 100-watt electric lamp can be installed 1.5 meters above the seedling to increase the intensity of light and light time. In the pond, the aquatic plants that wrap around the king lotus leaves, such as moss, sponges, duckweed, etc., should always be removed. Cut off the decaying old leaves from the plant at any time, keep the pool clean and let the new leaves grow out of the water.

Points for attention of Wang Lian

1. Spodoptera litura

[harm] the damage reached its peak in late July and mid-late August, and the larvae chewed on the upper leaf margin.

[prevention and control] it can be killed by 1000 times the number of trichlorfon or enemy.

2. Rhopalosiphum aphid

[harm] from August to October, nymphs and adults gathered on the leaf surface and leaf margin to absorb juice.

[control] 1000 times of 40% dimethoate or 2000 times of dimethoate, which is harmful to fish, can also be sprayed with 2000 times of aphid pine wettable powder or 3% of tripterygium.

3. Oval radish snail and flat snail

[harm] the peak period of damage was in late June, which was mainly caused by water leaves, most of which were attached to the back of leaves, and the cavities of different sizes were caused by eating mesophyll, and the damage of young leaves was more serious than that of old leaves.

[prevention and control] it can be caught by artificial or watermelon peel, and then swallowed by herring (snail green). The pond water is drained the week before planting, and the mud is poisoned with furan powder.

4. Fish damage

[harm] most fish except goldfish can harm young leaves and roots, especially grass carp and carp.

[prevention and control] Reed, bamboo curtain, lead wire or nylon net can be used for about a month, and the soil is covered with a layer of river sand or pebbles to protect seedlings.