Lodging causes and control methods of highland barley

Highland barley is a kind of cereal crop, which is also known as naked barley and yuan wheat because of the separation of its inner and outer glumes and naked seeds. It is the main food of Xizang people's geese. However, there will be lodging when planting highland barley, which seriously affects the yield of highland barley, so what are the reasons for lodging of highland barley? How to prevent and cure it? Let's take a look at the detailed introduction.

1. Variety factors

The lodging of highland barley has a great relationship with the difference of lodging resistance of its varieties. in general, the tall varieties will choose the top-heavy phenomenon when growing, which is easy to cause lodging; in addition, the lodging ability of the varieties with slender basal internodes, poor elasticity and toughness of stem is also poor.

Prevention and control methods: so try not to choose the above two varieties when planting, choose varieties with low stem but stout, strong internodes, good elasticity and toughness to reduce lodging rate.

2. Poor quality of land preparation.

During soil preparation, it is possible to cause shallow and uneven root distribution due to harrowing bacteria, uneven cover, large soil mass, large soil viscosity, poor permeability and so on, so the plant growth is weak and easy to lodge in the later stage.

Prevention and control methods: when planting soil preparation, we must rake the ground evenly, cover the soil evenly, break a large piece of soil in the field, loosen the soil, and maintain the soil permeability.

3. Poor sowing quality

Sowing time too early or too late will lead to lodging, early sowing temperature is low, seedling growth is weak, easy to lodge; sowing too late temperature is too high, seedlings grow too long, stem slender and weak, easy to lodge. In addition, sowing too deep or too shallow will also lead to lodging, sowing too shallow, seed root is shallow, lodging sowing too deep, seed germination will consume a lot of nutrients, resulting in weak seedlings, lodging. In addition, too high sowing density, dense growth after emergence, weak seedlings will also lead to lodging.

Prevention and control methods: sowing time must be grasped, not too early or too late, sowing depth should be 3-7 cm, local soil structure should be flexibly controlled, density should be paid attention to when sowing, seedlings are dense after emergence, and time seedlings.

4. Improper management

Too much nitrogen fertilizer is applied in highland barley, while phosphorus and potassium fertilizer is less, which leads to stem growth and fragility, easy lodging in the later stage, concentrated fertilization or improper time, which can easily lead to plant growth or premature senescence, resulting in lodging. In addition, the prevention and control of diseases and insect pests are not in place, fertilization stem growth is blocked, anti-lodging is weak, lodging is easy to occur.

Control methods: fertilization must be reasonable, pay attention to the amount of nitrogen fertilizer, increase the application of phosphorus and potassium fertilizer, improve the disease resistance and lodging ability of the plant. We must pay attention to the prevention and control of diseases and insect pests and deal with them in time to avoid further spread of diseases and insect pests.

The above is the introduction of highland barley lodging causes and prevention methods, hope to help you, want to know more related knowledge, please pay attention to us.