Causes of uneven emergence of the latest wheat and remedial measures

After wheat sowing, to face the problem of emergence, in previous years there will be a lot of growers in the response to the problem of uneven emergence, ask what is the cause of uneven emergence of wheat? How to remedy it? Let's learn more about it together with Xiaobian.

1. Reasons for poor seedling emergence

1. Seed causes

The germination rate of wheat seeds will be reduced when stored improperly, especially for self-retained seeds, and the fullness of seeds will be affected by bad weather during seed harvest, resulting in poor seed germination potential, weak topsoil ability and irregular emergence. Many farmers mix new and old seeds is also one of the factors leading to uneven emergence.

2. Poor land

The land management of wheat is relatively extensive, the moisture in the soil is distributed quickly, the seed is difficult to emerge or the emergence speed is slow, in addition, the cultivation reduces the large soil mass, resulting in loose soil, after watering has formed exposed seed seedlings and needle seedlings, seriously affecting the normal winter of wheat.

3. Insufficient nutrition

Wheat seeds in plots without basal fertilizer or with less basal fertilizer application, lack of nutrients in the soil will lead to its yellowing and poor growth, while if the organic fertilizer in the basal fertilizer is not decomposed, or the fertilizer is too low, it is easy to appear burning seedlings and seed damage.

4. Weather causes

The germination and emergence of wheat seeds have certain requirements for soil temperature and humidity. If the sowing time is too late and the temperature is low, the emergence rate will be reduced and the emergence time will be prolonged. Drought during sowing, or low clay and heavy rain caused soil hardening, will also affect emergence.

5. Diseases and pests

The seeds are not coated or dressed with chemicals when sowing, and are easily damaged by underground pests such as grubs, cutworms, insects, mole crickets, etc. after sowing, resulting in lack of seedlings and broken ridges. Wheat sown too late, in low temperature and high humidity environment is easily infected by bacteria and dead seedlings, or when using herbicides, there are drug residues, which will also affect normal emergence.

II. REMEDIATIVE MEASURES

For the plots with uneven emergence and lack of seedlings and broken ridges, one variety seed can be used for replanting after emergence, and for the wheat fields with lack of seedlings in a few places, measures of density shifting and thinning can be taken. In case of low temperature weather, late sowing should be hoe to preserve soil moisture and increase temperature to promote seed emergence as soon as possible. For soil hardening plots, tilling and loosening should be carried out in time to break soil hardening. For pest control, brassinolide and foliar fertilizer can be sprayed to alleviate phytotoxicity and promote weak and strong.

The above is an introduction to the causes and remedial measures of wheat emergence. I hope it can help you. If you want to know more about relevant knowledge, please pay attention to us.