Manjiang Hongyuan is a kind of green manure crop, which is common in rice fields. Because of its fast growth and strong reproductive ability, it is easy to cause water pollution. Manjianghong grows well at 15~25℃, but grows slowly above 35℃. Too high or too low temperature will affect its normal growth.
Manjianghong is common in paddy fields or ponds. Because it has nitrogen-fixing algae, it can fix free nitrogen in the air and is an excellent source of biological fertilizer for rice. Because of its high nutritional content, it can be used as feed for livestock and poultry.
Anabaena * * often occurs in Azolla, which has a wide growth temperature range, fast propagation speed, high yield and strong adaptability. It floats on the water and is often found in paddy fields, lakes, ponds and reservoirs. The growth of Azolla needs high temperature, and neither too high nor too low is suitable for growth.
Manjianghong related information
Azolla is a small floating plant of Azolla in Azollaceae. The plant body is oval or triangular, the rhizome is slender and transverse, the lateral branches are axillary, the branches are pseudodichotomous, and the fibrous roots are downward. Ye Xiaoru, sesame, alternate, sessile, arranged in two rows in imbricate shape. Leaves are deeply divided into two parts: dorsal leaves and ventral leaves. The back leaves are oblong or oval, fleshy and green, but often turn purple in autumn.
Spore fruit is twin on the branch, and megaspore fruit is small in size; Microspore fruit is much larger, spherical or peach-shaped, with a short beak at the top, thin and transparent fruit wall and many long-handled microspores. There are 64 microspores in each microsporangium, which are buried in 5-8 colorless spongy foam blocks with filamentous hairs on them.
The above contents refer to Baidu Encyclopedia-Manjianghong