CN-118266363-B - Sowing and seedling raising method for improving water resistance of huperzia serrata

Abstract

The invention provides a water-resistant pond fir seeding and seedling raising method based on forest water function combination, which comprises seed collection and storage, beach seeding, water management and age-appropriate transplanting, and the invention is characterized in that pond fir seeds floating on the water surface are collected, intermittent flooding and flooding-resistant domestication are carried out on seedlings in the water management period, so that the cultivated seedlings have stronger flooding-resistant capability than the traditional seedlings, the domestication time after planting is shortened, and the ponding depth is increased. The method has the advantages of simple operation, low seedling raising cost, high seedling survival and the like, and has important application value in relieving urban ecological construction places.

Inventors

• YOU XIANGLIANG
• ZHANG DONGMEI
• LUO YULAN
• ZHANG LANG
• CAI WEIBING
• YIN LIJUAN
• FU RENJIE
• ZHANG HANYUE

Assignees

• 上海市园林科学规划研究院

Dates

Publication Date

20260505

Application Date

20240429

Claims (2)

1. 1. A seeding and seedling raising method for improving water resistance of huperzia serrata is characterized by comprising the following steps: S1, collecting and storing seeds, namely observing the color of the seeds of the huperzia serrata when the seeds of the huperzia serrata are mature in the last 10-11 months, and collecting the seeds of the huperzia serrata which float on the water surface when the color of the seed coat of the huperzia serrata is changed from yellow brown to dark brown; S2, sowing in the mud flat, namely uniformly sowing collected pond fir seeds on the surface of a shoal mud biogas, covering a layer of fine soil on the pond fir seeds, wherein the thickness of the pond fir seeds is 0.8-1.2cm, and the sowing amount of the pond fir seeds is 6-8kg/666.7m 2 ; S3, water management, namely water management in a germination period, a seedling stage and a fast-growing period, and creating a discontinuous soaking environment of the huperzia serrata seeds, wherein the water management comprises the following concrete steps: the germination period is that before the seeds are sowed until the first true leaves germinate, soaking water is carried out 1 time per half month, and the water is soaked by the covering soil for 0.5-1cm for 30min; the seedling stage, namely, growing first true leaves on seeds until seedlings grow out uniformly, soaking for 1 time per week, wherein the water depth is 1-1.5cm, and the duration is 1h; A fast growing period, which is to soak 2 times per week after the seedlings come out to a fast growing period, wherein the water depth is about 2cm, and the duration time is 2 hours each time; S4, transplanting in proper age, namely transplanting after leaves fall off and sleep when seedlings grow to a hardening period, and performing conventional management after transplanting the seedlings.
2. 2. The method for raising seedlings by seeding for improving water resistance of huperzia serrata according to claim 1, wherein in S2, the seeding time of the huperzia serrata seeds is 11 months in the current year to 2 days in the next year.

Description

Sowing and seedling raising method for improving water resistance of huperzia serrata Technical Field The invention relates to the technical field of seeding and seedling raising methods for improving water resistance of plants, in particular to a seeding and seedling raising method for improving water resistance of huperzia serrata. Background With rapid promotion of urban areas, space resources are increasingly tensioned, original green lines of forest lands, blue lines of river channels and other controllable elements fracture a continuous water-land water-green fusion space, ecological elements and management and control indexes in water and forest (green) aspects are difficult to comprehensively consider, and the phenomenon of 'forest water contention' frequently occurs. Therefore, the combination of the forest and the water and the blue-green becomes an important way for breaking the contradiction between the urban ecological construction land. The water-wet resistance is better, and tree species of trees such as pond fir and the like which can grow in water for a long time after survival are selected to build 'forest on water', which is a classical case of forest-water combination and blue-green combination. Cephalotaxus fortunei, also known as Chi Bai, belongs to the genus Cephalotaxus of the family Cunninghamiae, which is native to Virginia, china. Because the plant has beautiful shape, the trunk base is expanded, and the plant is planted on two sides of a lake or a river, which is a garden tree species with high ornamental value. Despite its strong resistance to water wetting, huperzia serrata grows in water with very difficult soaking for long periods. Therefore, the pond fir is usually subjected to gradual flooding and domestication, an intermittent flooding environment is generally created in a growing period of 1-2 years after planting, the water depth is not more than 50cm, the continuous flooding time is not more than 3 months until the water-resistant arbor forms an aerial root, and after the pond fir is adapted to the aquatic environment, the ponding is not too deep (within 1 m) to avoid influencing the growth of the pond fir. According to the flooding domestication method, the seedlings obtained by adopting the traditional nursery seedlings to the land-grown parent tree seeds are often used as planting seedlings to start domestication, so that the domestication time is prolonged, and the flooding-resistant potential is hidden. Disclosure of Invention In order to overcome the defects of the prior art, the invention provides a sowing and seedling raising method for improving the water resistance of the huperzia serrata, which is characterized in that the huperzia serrata seeds which float on the water surface are sown on the shoal mud biogas with intermittent flooding to carry out the flooding-resistant domestication of the seedlings, so that the huperzia serrata seedlings with stronger flooding-resistant capability are obtained, the domestication time after planting is shortened, and the water accumulation depth is increased. In order to solve the technical problems, the invention adopts the following technical scheme: The seeding and seedling raising method for improving the water resistance of the huperzia serrata mainly comprises the steps of seed collection and storage, seeding, moisture management and age-appropriate transplanting, and specifically comprises the following steps: s1, collecting and storing seeds, namely observing the color of the pond fir seeds in the last 10 to last 11 months when the pond fir seeds are mature, and collecting pond fir seeds floating on the water surface when the color of pond fir seed coats is changed from yellow brown to dark brown. S2, sowing in the mud flat, namely uniformly sowing the collected pond fir seeds on the surface of the mud marsh of the shallow, and covering a layer of fine soil on the pond fir seeds with the thickness of 0.8-1.2cm. S3, water management, namely water management in a germination period, a seedling stage and a fast-growing period, and creating a discontinuous soaking environment of the huperzia serrata seeds. S4, transplanting in proper age, namely transplanting after the seedlings grow to a hardening period and the leaves fall off and sleep. And after transplanting the seedlings, carrying out conventional management. Further, the moisture management specifically includes: the germination period is that before the seeds are sowed until the first true leaves germinate, soaking water is carried out 1 time per half month, and the water is soaked by the covering soil for 0.5-1cm for 30min; The seedling stage is that after the seedlings grow out completely to the rapid growth period, the seedlings are soaked for 1 time per week, the water depth is 1-1.5cm, and the duration is 1h; And in the fast growing period, after the seedlings come out well to the fast growing period, soaking for 2 times per week, wherein the water depth i