Management and mulching of plastic film in the later stage of Lily
I. late-stage management
The main results are as follows: (1) timely pearl harvest should be carried out on a sunny day to prevent breaking the plant and knocking off the upper green leaves.
(2) shading and cooling, clearing ditches and reducing humidity and shading is a measure to prevent high temperature. covering rice straw at seedling stage can reduce water evaporation and soil temperature for lily growth in the later stage.
(3) after the harvest of bulbs with increased fertilizer, the leaf color of lily gradually became lighter, indicating that nutrients had been out of balance, and nutrients must be increased to prevent premature senescence of lilies. At this time, an appropriate amount of quick-acting chemical fertilizer should be applied. During the flowering period, better results can be obtained by watering lily with 20 kg ammonium bicarbonate per mu. In addition, 0.2% potassium dihydrogen phosphate can also be sprayed on the leaves to meet the needs of phosphorus and potassium in the later stage of the lily.
Second, covering plastic film
Plastic film mulching plays a significant role in increasing soil temperature, increasing accumulated temperature, promoting lily seed root growth during overwintering and early seedling emergence. Due to the early emergence of seedlings, the increase of growth and the advance of growth period, the effect of early maturity and yield can be achieved.
The main results are as follows: (1) the purpose of covering film is to keep moisture and increase temperature.
(2) after uncovering the film or breaking the plastic film, the lily can emerge in early March, which is generally about half a month earlier than that without plastic film. At this point, the film can be uncovered or broken.
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Control of common diseases in lilies
Several common diseases of lilies: Lily mosaic disease, bulb rot, spot disease, leaf blight and so on. Mosaic disease is also called lily latent mosaic disease, when the disease occurs, the leaves appear uneven chlorotic spots or withered spots, the injured plants are short, the leaf edges curl, the leaf shape becomes smaller, and sometimes fusiform light brown spots appear on the petals, flower deformities, and not easy to open. ① selected virus-free bulbs to remain seeds; ② strengthened the control of aphids and leafhoppers; ③ found diseased plants were pulled out and destroyed in time. At the beginning of the disease, the leaves
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Fertilization techniques of Lily and Rose
Ms. Xi of Anhui Quanjiao asked: the lily I planted harvested bulbs, how to fertilize to achieve high quality and high yield? Expert: Lily is a perennial plant and should be re-applied with organic fertilizer. The seedling stage is longer, so it is necessary to give priority to organic fertilizer and cooperate reasonably with nitrogen, phosphorus and potassium fertilizer. First of all, we should choose the sandy loam with deep soil layer and good drainage. Before planting, combined with deep ploughing and soil preparation, 2000-3000 kg of rotten organic fertilizer, 10 kg of urea, 20-30 kg of superphosphate and 10-15 kg of potash fertilizer were applied per mu. Topdressing is divided into three times, combined with shallow tillage and weeding.
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