Fern species harm: perennial weed. Occurrence and harm spore reproduction. Forest edge or mountain sunny slopes. Growing in the mulberry garden, tea garden, gum garden, mountain forests, grasslands, as a common weed, large occurrence, heavy damage.

Methods of control:

1, mechanical control

Combined with agricultural activities, the use of farm machinery or large day type agricultural machinery for a variety of plowing, harrowing, plowing and loosening of the soil and other measures for the pre-sowing, pre-sowing and the fertility of the period of time such as different periods of weed control, direct killing, mowing or eradication of weeds.

2, chemical weed control

The main feature is efficient, labor-saving, eliminating the heavy field weeding labor. At home and abroad there are more than 300 kinds of chemical herbicides, and processing of different formulations, can be used for almost all food crops, cash crops, weed control.

Expanded Information

Morphological Characteristics: Terrestrial, stout. Rhizome as thick as a finger, ropey, long and transverse, black-brown, with a complexly divided dichotomous tubular mesostyle, densely covered with light rusty-yellow pilose, without scales.

Leaves distant, long-petiolate; blade large, usually ovate or ovate-triangular, ternate-pinnate; pinnae subopposite or alternate, stipitate, basal pair of pinnae larger, triangular. Leaf veins separate, pinnate on the ultimate segments, lateral veins bifurcated, conspicuous or elevated below, reaching a marginal vein at the leaf margin.

Leaves are leathery or papery, glabrous or occasionally sparsely hairy above, more or less hairy below, often densely gray-brown velutinous below the main veins especially on the ultimate segments, rarely nearly smooth and glabrous.

Sporangia are linearly distributed along the leaf margins, inserted on a connecting vein within the margins, without spacer filaments; the capsule cover is double-layered, the outer layer is a pseudocapsule formed by reflexed metamorphosed membranous leaf margins, and the inner layer is a true capsule born under the capsule buttresses, which is thinner in texture, either developed or nearly degenerated; the sporangia are long-stalked, with an annular band consisting of roughly 13 thickened cells; spores are tetradentate and have subtle papillary protuberances.

Baidu Encyclopedia - Fern

Baidu Encyclopedia - Genus Fern