Recently, wheat has been used for several times, and the phenomenon of dead spikes still cannot be cured. It has aroused widespread concern among farmers and friends. Some readers have told about their own situations in the message, and some analyzed the main reasons. Today's Xiaobian should be especially reminded that if there are too many wheats with dead ears in the wheat field this year, don't carry the straw back to the field when harvesting. Otherwise, the disease may be more serious next year.

Why do you want to say this? Because many wheat fields with dead ears may be infected with wheat stem rot, which has a great impact on wheat yield. The final yield of severe wheat fields is only three or four hundred kilograms, and the yield is severely reduced. . I am going to close the wheat soon. Here, Xiao Bian once again reminds the farmers that the farmers must pay attention: the wheat straw that is infected with such diseases should not be returned to the field, otherwise it will easily cause the disease to break out again in the next season, causing serious production cuts!

Symptoms of wheat stem rot are: white or semi-white spikes, basal stems rot.

In recent years, wheat stem rot has become more and more serious, which can cause wheat to reduce production by 10% to 70%, and the disease is difficult to cure. Some people call it "new wheat cancer."

It has been ascertained that wheat "stem-based rot" is a new-earth-borne disease caused by mixed infection of various pathogens. Six pathogens have been isolated, and the dominant pathogens are Fusarium graminearum, Fusarium graminearum and Rhizoctonia solani.

The pathogen is attached to the diseased body, and the wintering over the soil in the soil, from the rhizome joint, multiple infestation of the wheat seedlings. Control method:

One is to change crops and replant other crops.

The second is to remove the diseased debris in the field, that is, the wheat straw is removed from the field, and not to return to the field again.

The third is the treatment of soil during the autumn. Effective agents tebuconazole, chlorfenapyr, carbendazim, azoxystrobin and difenoconazole.

The fourth is to carry out chemical coating or seed dressing on the seeds. Use one or two of the above agents.

The fifth is to apply the medicine during the period from the return of wheat to the jointing stage. An effective agent for carbendazim or nail cream.

Sixth, the current main wheat varieties are susceptible to this disease. It is necessary to pay attention to the investigation and planting and screening for the next season.

(Author: Jiaxiang County Farm Bureau senior agronomist gold hat agricultural experts Zangjia Chen)