Application of mixed nitrogen in promoting growth of rhizoma bletillae and improving photosynthetic efficiency and polysaccharide accumulation

Abstract

The invention discloses application of mixed nitrogen in promoting growth of rhizoma bletillae and improving photosynthetic efficiency and polysaccharide accumulation, relates to the related field of plant growth, and aims to obtain the effect of promoting the growth of rhizoma bletillae by the mixed nitrogen by researching different nitrogen forms on the growth of rhizoma bletillae, chlorophyll fluorescence characteristics and polysaccharide accumulation. The accumulation of dry matters is facilitated, the photosynthetic efficiency of rhizoma bletillae can be improved, and the accumulation of polysaccharide is facilitated. The total nitrogen concentration of the mixed nitrogen is 15 mmol / L, NO3--N: NH4 < + >-N in the mixed nitrogen is 1: 1, Ca (NO3) 2.4 H2O and KNO3 are used for NO3--N, (NH4) 2SO4 is used for NH4 < + >-N, the mixed nitrogen promotes the rhizoma bletillae to grow leaves, increase the plant height and increase the stem diameter, dry matter accumulation of the overground part and the tuber part is improved, the mixed nitrogen promotes the rhizoma bletillae to grow under the weak light condition, and the mixed nitrogen improves the maximum photochemical efficiency of the leaves and the episightseeing synthetic electron transfer rate, and promotes polysaccharide accumulation.

Description

technical field

[0001] The invention relates to the fields related to plant growth, and specifically relates to the application of mixed nitrogen in promoting the growth of algae, improving photosynthetic efficiency and polysaccharide accumulation. Background technique

[0002] Bletilla striata (Thunb.) Reichb. F. is a perennial herbaceous plant belonging to the genus Bletilla of Orchidaveae. Baiji is not only beautiful in shape and has high ornamental value, but its dried tubers are also traditional Chinese medicinal materials, which have the effects of stopping bleeding and astringent, reducing swelling and promoting muscle growth. The polysaccharide extracted from the tuber of Baiji is the main medicinal component of Baiji, which has a variety of pharmacological activities and has been widely used in medicine, daily chemical, food, chemical and other industries.

[0003] Nitrogen is one of the three major nutritional elements of plants. It not only participates in the co...

Examples

Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0028] Materials and Methods

[0029] 1.1 Experimental materials

[0030] Guizhou Botanical Garden self-raised annual white and seedlings.

[0031] experimental design

[0032] Cultivation plan: select the seedlings of Baiji which are basically the same in size and growth, and plant them in a 1:1 mixed matrix of quartz sand and vermiculite by potting method, with 3 plants per pot.

[0033] There were four treatments including control (CK), ammonium nitrate 1:1 mixed nutrition (TM), pure nitrate nutrition (TN) and pure ammonium nutrition (TA), with 15 pots for each treatment. Supplement nutrition once a week, and harvest after half a year of cultivation.

[0034] ...

technical field

[0001] The invention relates to the fields related to plant growth, and specifically relates to the application of mixed nitrogen in promoting the growth of algae, improving photosynthetic efficiency and polysaccharide accumulation. Background technique

[0002] Bletilla striata (Thunb.) Reichb. F. is a perennial herbaceous plant belonging to the genus Bletilla of Orchidaveae. Baiji is not only beautiful in shape and has high ornamental value, but its dried tubers are also traditional Chinese medicinal materials, which have the effects of stopping bleeding and astringent, reducing swelling and promoting muscle growth. The polysaccharide extracted from the tuber of Baiji is the main medicinal component of Baiji, which has a variety of pharmacological activities and has been widely used in medicine, daily chemical, food, chemical and other industries.

[0003] Nitrogen is one of the three major nutritional elements of plants. It not only participates in the co...

Examples

Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0028] Materials and Methods

[0029] 1.1 Experimental materials

[0030] Guizhou Botanical Garden self-raised annual white and seedlings.

[0031] experimental design

[0032] Cultivation plan: select the seedlings of Baiji which are basically the same in size and growth, and plant them in a 1:1 mixed matrix of quartz sand and vermiculite by potting method, with 3 plants per pot.

[0033] There were four treatments including control (CK), ammonium nitrate 1:1 mixed nutrition (TM), pure nitrate nutrition (TN) and pure ammonium nutrition (TA), with 15 pots for each treatment. Supplement nutrition once a week, and harvest after half a year of cultivation.

[0034] ...

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