Causes of uneven emergence of wheat seedlings and remedial measures

In wheat sowing, to face the problem of emergence, in previous years, there will be a lot of growers in 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 the details with the editor.

1. Reasons for uneven emergence of seedlings

1. Seed causes

The seed storage of wheat will reduce the germination rate at that time, especially the self-retained seed is more serious, and the seed plumpness is affected by the bad weather in the seed harvest, resulting in poor seed germination, weak top soil ability and irregular emergence. The mixed sowing of new and old seeds by many farmers is also one of the factors leading to uneven emergence.

2. The land is poor

The land management of wheat is relatively extensive, the water in the soil is distributed quickly, the seeds are difficult or slow to emerge, in addition, large soil blocks are reduced in tillage, resulting in loose soil, and open-seeded seedlings and needle seedlings have been formed after watering, which seriously affects the normal overwintering of wheat.

3. Lack of nutrition

The seed of wheat in the plot where there is no base fertilizer or less base fertilizer is that the lack of nutrition in the soil will lead to its yellowing and poor growth, but if it is applied to the unmature organic fertilizer in the base fertilizer, or the fertilization is too low, it is easy to burn seedlings and damage seeds.

4. Weather reasons

The germination of wheat seeds and the emergence of seedlings have certain requirements for soil temperature and humidity. If the sowing time is too late and the temperature is low, it will reduce the emergence rate and prolong the emergence time. Drought during sowing, or clay hardening caused by low rainstorm, will also affect seedling emergence.

5. Diseases and insect pests

The seeds are easily harmed by grub, ground tiger, golden needle worm, mole cricket and other underground pests after sowing without coating or chemical dressing, resulting in the phenomenon of lack of seedlings and broken ridges. If the wheat is sown too late, it is very easy to be infected by bacteria and die seedlings in the environment of low temperature and high humidity, or there are drug residues when using herbicides, which will also affect the normal emergence.

II. Remedial measures

For the plots with uneven emergence, lack of seedlings and broken ridges, the seeds of one variety can be used for replanting, and the measures of densification and thinning can be taken for the wheat fields with missing seedlings in a few places. If late sowing meets low temperature weather, it is necessary to hoe to preserve soil moisture and increase temperature, to promote the emergence of seeds as soon as possible, to plough the soil in time to loosen the soil, to break the soil consolidation, to pay attention to the prevention and control of diseases and insect pests, and to the drug damage caused by herbicides. Brassinolide and foliar fertilizer can be sprayed to alleviate the drug damage and promote the weak to become strong.

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