Daylily (Day Lily) winter greenhouse cultivation

Cultivation Techniques

1. Nursery

It is important to cultivate healthy roots and strong seedlings because they are perennial perennial roots, so they have the characteristics of one-year planting and multi-year income. To protect the cultivated plants, the growth period must reach 3 to 5 years. Each pier has 10 or more pseudo-stems and disease-free strong seedlings must be used. The specific method is to select robust sprouts, which are planted at a density of 1.2 meters per hole, with a spacing of 50 centimeters and 40 centimeters. The cultivation plots are easy to water and have good drainage. Deep plowing 35 cm, 667 m2 of organic fertilizer 5000 kg. When the nursery planer is cultivated, the root system is kept intact, and the mother root is cut into several pieces to be seedlings. Each piece has 2 buds and a fleshy root. 3 plants were planted in each hole and the distance between the plants was 8 cm. At the time of colonization, 2500 kg of urea and 30 kg of urea were applied every 667 m2. The colonization time is from mid-June to mid-July. If the colonization is too late, it will affect the growth of the seedlings and the accumulation of nutrients, and the yield will decrease in the second year.

2. Post-planting management

(1) Fertilizer management

How the management and seedlings after planting will directly affect the output in the spring of next year. Therefore, strengthening management during this period is the key to achieving high yields. The planting period is at the flood season, the rain is large, and the lily is tolerant of drought. Therefore, it is necessary to exclude the field water in time and remove the weeds. After the flood season, timely watering, combined with watering for topdressing, mainly nitrogen fertilizer, topdressing urea to 20 kg per 667 square meters, chase twice, to promote seedlings strong, more accumulated in the root nutrient retraction, yellow, can be Flatland cut dead leaves, apply winter fertilizer, apply 2,000 kg of compost fertilizer per 667 square meters, evenly mixed with fertilizer and soil to cover the inside of the pot, and prevent new roots from appearing on the ground.

1 top dressing. Bud-fertilizer: Before 10 leaves on the ground grow, 25 kg of nitrogen, phosphorus, and potassium ternary compound fertilizer is topdressed per 667 square meters to promote flower bud differentiation and leaf hypertrophy. For manure: When the calyx starts to be extracted, topdressing 20 kg of compound fertilizer per 667 square meters, in order to strengthen the strong buds, increase production. Anti-decay fertilizer: that is, after 10 days of picking buds to prevent nutrient supply shortage, maintain the growth potential, using topdressing available nitrogen fertilizer and foliar fertilizer method, the amount of fertilizer according to the circumstances.

2 watering. Lily is tolerant of drought, but it must also maintain a certain degree of soil moisture. Never flood the water to prevent soil moisture, excessive air humidity, high convulsions and budding. General combination of fertilizer watering. After the withdrawal of the shed in June, watering is usually done 5 times a day.

(2) Winter warm greenhouse standard

The back wall of the winter-warm type plastic greenhouse has a height of 1.8 meters, a height of 2.7 meters, a front edge of 1.1 meters, a wall thickness of 1 meter, a shed width of 8 meters and a length of 60 meters. Coverage is a drop-free film and grasshopper, no drop film must be changed every year.

(3) Timely sheds

The genus Lilium is a low-temperature long-day plant. The autumn climate is conducive to the differentiation of flower buds. The protection cultivation only advances the flowering period and prolongs the vegetative growth period. Therefore, according to the growth characteristics of broccoli and the length of dormancy, different protection cultivation methods are Determine the shed time. Winter warm greenhouse insulation performance is good, in late December or early January the following year. Generally, when the new leaves reach 15 to 22, they can twitch. The winter warm greenhouse can be harvested in mid-April and harvested in mid-June.

(4) Temperature and humidity management after buckle

In the cultivation of winter warm plastic greenhouses, day lily should be determined according to its growth and development habits and adaptability to environmental conditions during different growth periods.

1 Before the convulsions, the main attention should be paid to the management of heat preservation, which should be maintained at 15 to 20°C during the seedling period and above 5°C during the night. 2 After twitching, keep it at 20-25°C during the day and keep the air temperature at 25～30°C during the budding period. Ventilate and change the air, reduce humidity and humidity, and reduce the humidity of the shed to below 90% to prevent the occurrence of diseases.

3. reward

The cultivation of day lily is mainly sold in fresh land, and the time for picking is strict. If it is too early or too early, it will affect the yield and quality. Therefore, the best time for picking is full of buds, bright red color, unbroken indigo, golden central color and green at both ends. The best time is when the top purple dot has faded.

Pest Control

1. Disease prevention and treatment

The common diseases of day lily are rust, leaf blight, leaf spot, and root rot. Rust can be controlled by 1500-2000 times 25% triadimefon spray; leaf spot, leaf blight can be used 500 to 600 times the Bordeaux mixture, 500 times the 50% carbendazim solution, 1000 times 75% chlorothalonil solution control . Spray once every 7 days and spray twice. Root rot can be treated with 70% thiophanate-methyl 1000-fold, 25% carbendazim 500-fold, and 1.2:7.5 copper-ammonia mixture 1500-fold for root canal control. 7 to 10 days irrigation 1, even irrigation 3 to 4 times.

2. Pest control

The main insect pests of day lily are locusts and red spiders, which are usually sprayed with 40% oxidized tung 1000 times or killing 1000-1500 times. No medicine is available during flower collection to avoid product residues.

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