A method for cultivating and transplanting terrestrial seedlings of P. spicanus

Abstract

The invention discloses a method for cultivating terrestrial seedlings of P. spicanus, which comprises the following steps: collecting fresh body of P. spicanus and cutting them after treatment, cultivating and surviving in an aquatic environment, and then maintaining the water content of the culture medium greater than 40 by spraying %, the moisture content of the air is greater than 80%, and the light intensity is controlled to be less than 4000 lx for 25-35 days. After domestication, continue to cultivate for 30 days. During this period, gradually reduce the number of spraying to once every 3 days, and gradually increase the light. The intensity is up to natural light, and terrestrial seedlings of P. spicaculata can be obtained. The invention has the advantages of: easy transportation of seedlings, avoiding the death problem caused by dehydration or high temperature; simple transplanting operation, planting like dry land plants, precise control of planting row spacing, reducing waste of seedlings, and improving construction quality After the transplanting is completed, by slowly raising the water level, the terrestrial seedlings can quickly adapt to the aquatic environment, with a survival rate of over 90%, which avoids the disadvantages of the low survival rate of submerged plants in the past and the need for multiple replanting.

Description

technical field [0001] The invention belongs to the technical field of ecology and environmental protection, and relates to an engineering technology for reconstructing a water body ecosystem by aquatic plants, in particular to a method for cultivating and transplanting terrestrial seedlings of P. spicanus. Background technique [0002] Plants of the genus Myriophyllum (Myriophyllum L.) are aquatic or semi-humid herbs with well-developed root systems and can spread in the bottom mud. Leaves alternate, sessile or nearly sessile, peanuts above water. M. spicatum L. var. spicatum is a species of M. spicatum, which is widely distributed in the world. M. spicatum grows vigorously in summer and can grow all year round. It often grows in ponds, river ditches, and swamps in the north and south of my country, and it is a dominant species in many water bodies, especially in calcium-containing waters. However, with the acceleration of the urbanization process in our country since the...

AI Technical Summary

Problems solved by technology

In the process of planting submerged plants, most of them use water-carrying operations, especially when the water depth is greater than 1m, the difficulty of operation will be greatly increased. Using boats, it is difficult to expand the working surface, which leads to a significant reduction in planting efficiency

The seedlings of traditional P. spicaculata are aquatic seedlings, which need to be dewatered during collection and transportation, and it is difficult to ensure their activity, especially in long-distance transportation, often due to long dehydration time or plant respiration. The problem of seedling death caused by fever, when the temperature in summer is above 30 degrees, the transportation time exceeds 24 hours, the mortality rate is greater than 50%, and long-distance transportation cannot be carried out