Bitter grass is a typical submerged plant and an indispensable aquatic plant in crab culture. It is often used as underwater material in garden water features or courtyard pools, and is ideal for greening water bodies or decorating aquariums. So how is the bitter grass cultivated? Let's go together to see it!

Bitter grass cultivation method:

Best propagation time: seed propagation is usually carried out at the end of April and mid-May; branch propagation usually occurs from May to August;

Best growing soil: narrow-leaved bitter grass is not strict on soil requirements, most often found in gullies, rivers, ponds and lakes. Wild plants mostly grow on mountain slopes, under the forest streams, ditches, next to the southern provinces are suitable for planting bitter grass.

Optimum growing temperature: bitter grass likes warmth, shade tolerance. The optimal growing temperature in the water is 18~22;

The best light for growth: Bitter grass likes sunshine, and the aquaculture in the water should enhance the light in the water.

Precautions for breeding bitter grass:

Fertilizer: fixed planting land per acre of base fertilizer 2500 kilograms, it is best to use grass peat mud, human and animal feces and calcium, magnesium, phosphorus mixture. According to the waters of the situation fat and thin, the appropriate follow-up fertilizer. Generally, 10 kg of calcium superphosphate or 2 kg of ternary compound fertilizer per 667 square meters. If the silt is thicker and the water is fatter, there is no need to fertilize to prevent overgrowth.

From transplanting to harvest takes more than 3 months, you can fertilize 4-5 times in stages. Pre-growth can be applied 500-800 kg of dilute manure per mu; later can be applied nitrogen, phosphorus and potassium compound fertilizer or urea.

Watering points: if the expansion of seedlings replanting after continuous sunny days without rain, strengthen watering, keep wet. Generally in 1-2 weeks after transplanting, when the seedlings resume growth, check the plants, replant the missing seedlings in time to ensure that the whole seedling. Bitter grass needs more water throughout the growth process, and should be drenched frequently in the future to promote its growth.

Reproduction points:

Bittergrass reproduction is divided into

seed reproduction and asexual reproduction.

Sexual propagation:

Germination March-April, the seeds collected in the first year are squeezed and cleaned before germination and sowing. After testing with different water temperatures from 20 to 28 to 10, with or without substrate, the germination rate was higher when the water temperature was 28 and substrate was present.

Sowing: choose the soil and container for cultivation, sterilize it and put it in a pot, soak it in water. After the water is clear, the seeds that have been germinated or lightly rubbed are spread on the soil surface, covered with fine soil, add water for 3-5cm, cover with glass or plastic film, keep the temperature at about 28 to avoid light, and complete germination in about 40 days. Then turn on the ventilation and light for seedling, or separate out the sprouts for seedling. If the breeding volume is large, choose a pond with good ventilation and sunshine, fertile soil and good water supply conditions, remove weeds and foreign objects, level and tamp the soil, and then move the seedlings after the water is clarified. Seedling spacing is generally 10-20 centimeters. Seedlings should be removed in a timely manner to remove weeds, strengthen pest control, and fertilize 1-2 times to promote plant growth and development. Here, the water level should be deepened at any time to prevent the leaves of the plant from dying due to sunlight, which affects the time of transplanting and planting. The row spacing of transplanted plants should be determined according to the size of seedlings, plant height and ornamental angle. 20-30cm for aquariums and 50-80cm for water features.

Asexual propagation:

Branch propagation: generally carried out in May-August. Branches cut from underground stems are used for propagation. This method is simple and can be directly transplanted and planted for ornamental purposes.

Tissue culture: cut 2-3cm long stem segments from the expanded part of above ground stem tip, surface sterilized and placed in 1/2M6BAIBA0.2 medium to induce seedlings. Then, the tissue culture seedlings were moved to aquariums and ponds for cultivation.

Pest control: the main pests in the seedling stage of Narrow-leaved Bitterroot are 0.10-5.9 million, especially in the mud pond

All bitter herbs can be used as medicine. And bitter and cold. It has the efficacy of clearing heat and detoxification, subduing swelling and relieving pain, and is very effective for sore throat.3. Economic Value

Fodder for fish, ducks and pigs. The expanded balls at the end of its creeping branches are the main food for birds.

A small amount of river crabs, shrimp or carp, crucian carp, Mandarin fish and so on. Can effectively control the ineffective tiller, improve seed production and quality, significantly improve economic efficiency. 80-120 / kg, density 200-300 / 667 square meters, or 2000-3000 / kg size 1000 / 667 square meters, overwintering larvae 5-10kg / 667 square meters; or 500-1000 carp / 667 square meters, such as summer Jian carp, heterozygous silver carp, Mandarin fish, etc.. It can produce adult crab 15-40kg/667m2, adult shrimp 20-30kg/m2, or large fish species 40-50kg/667m2.