Tianxuanhua, also known as bowl flower, small spiny flower, rabbit ear grass, is a genus of spiny flowers, dicotyledonous plants. It is a perennial herb with nearly glabrous. Rhizomes walk sideways. The stems lie flat or winding, with edges. The capsules are spherical or conical; the seeds are oval. It is harmful to corn, cotton, soybeans, fruit trees, wheat, etc. At large occurrences, they often grow in pieces, densely covered by the ground, winding upwards, strongly inhibiting crop growth and causing crops to lodging. It was also the host of the first generation of larvae of the ground tiger. It is distributed in northeast China, north China, northwest China and Shandong, Jiangsu, Henan, Sichuan, Tibet and other places. The field spin flowers are wild in cultivated land, barren slope grasslands, and beside village side roads.
Field spin flowers can be propagated and spread through rhizomes and seeds, and seeds can be eaten by birds and mammals for long-distance transmission.
At present, the harm of field spin flowers to field crops is mainly in wheat, corn, peanut and soybean fields. Let's introduce them one by one:
Wheat fields
The main harm period of field spin flowers in wheat fields is after the Spring Festival, the weather gradually warms up, and the seeds of field spin flowers begin to germinate and grow rapidly, forming a hazard. Recommended use: Chlorofluoropyroxyacetic acid or difluorosulfame.
Precautions: After wheat jointing, use chlorofluoropyroxyacetic acid, and the amount of mu can be appropriately increased. Remember that the water consumption per mu is more than 30 kg before it can be sprayed evenly.
Cornfields
1. Closed before seedlings
42% isopropyloxam can be used per acre. 250 ml of weedojin, mixed with 30 kg of water, spray evenly.
Note: Closed herbicide, it is recommended that the water consumption per mu must be more than 30 kg.
2. Selective herbicide after seedlings
Chlorofluoropyrazoxyacetic acid can be combined with nicosulfuron, avidrazine for control or nitrosulfonone + nicosulfuron + weedosulfuron + weedrodecin
Precautions: After the corn five leaves and one heart, lower the sprinkler head, directional spray, avoid the corn heart leaf.
Peanut and soybean fields
Acetylene fluorocarbonyl ether and fluorosulfa oxalate can be used to prevent field spin flowers. Compound refined quinoquinone or high-efficiency fluoropyridomethyl helin, heku double removal.
Precautions: avoid high temperature application, another acetylene fluorosole, fluorosulfather on peanuts, soybeans have burns, use excess, leaves fall off, about a week, you can recover.
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