1.Technical measures after cold wave
Cotton field management measures
The end of May is a critical period for cotton
seedling management. Cotton has basically passed
the seedling stage and is vulnerable to cold waves
and wind disasters. Frost and wind damage on seedlings
will seriously affect the growth of crop seedlings.
The targeted management measures are as follows:
（1）Timely cultivating. After the rain, cultivating and
loosening the soil in time to increase the ground temperature,
reduce the impact of low temperature, improve soil aeration,
avoid crop root rot, promote root growth, promote early
seedlings, and cultivate strong seedlings.
（2）Timely prevention and control of diseases. After the
cold wave, the various tissues of crop seedlings have
been damaged to varying degrees, so diseases are more
likely to occur. Therefore, it is necessary to strengthen
the prevention and control of blight and other diseases
to avoid the impact of diseases.
（3）Seal the hole in time and hit the soil ridge to
protect the film. One is to prevent the cold air
from harming the crop seedlings through the open holes,
and the other is to prevent the soil at the planting
holes from becoming hard after low temperature, resulting
in weak and stiff cotton seedlings. Lay new mulch
film in combination with manual work, and make small
soil ridges vertically spaced from the film row to
prevent strong winds.
（4）Check seedlings and replant. Seedlings and replanting
shall be carried out as appropriate according to the
disaster situation, or other timely varieties or crops
shall be re-broadcasted in a timely manner.
（5）Foliar fertilization. After the cotton seedlings
have been devastated by strong winds, foliar nutrition
should be supplemented in time. Brassin + potassium
dihydrogen phosphate + humic acid fertilizers should
be sprayed on the foliar surface, and replanted as
appropriate while remediating.
（6）Avoid lodging. Pay attention to the weather forecast
and do not irrigate before strong winds to avoid yield
reduction due to plant lodging.
2.Technical measures after high temperature and drought
Wheat field management measures
For wheat fields that have not been irrigated in winter
or have thin snow cover, the risk of safe wintering is
high and the drought in spring is serious. Targeted
（1）For the wheat seedlings affected by drought, organize
watering as soon as possible to ensure that the seedlings
do not die.
（2）For the first- and second-class seedlings, apply
jointing fertilizer early, and spray foliar fertilizer
to speed up the transformation and upgrading of the
seedlings. In case of rain, urea can be applied while
it is raining.
Cornfield Management Measures
The corn tasseling and silking period is the most
sensitive period to high temperature and moisture.
Special attention should be paid to preventing drought
and high temperature heat damage, and the following
main measures should be taken:
（1）Timely irrigate to cool down and protect seedlings,
reduce field temperature, and prevent high-temperature
heat damage. It is recommended to promote water-saving
irrigation technologies such as drip irrigation.
（2）After irrigation, cultivating and cultivating
soil in time to reduce water evaporation.
（3）Foliar spraying of fertilizers and drought-resistant
agents. Use potassium dihydrogen phosphate, humic acid
anti-drought agent, etc. to cool and humidify to
improve drought resistance.
（4）Manually assisted pollination. During periods of
high temperature and drought, the natural dispersal,
pollination and fertilization capacity of maize
decreased. It is recommended to use artificially
assisted pollination between 8 and 10 in the morning
to increase the seed setting rate.
3.Departmental linkage to provide technical services
for disaster prevention, mitigation and relief
The agricultural technology extension department
should guide the farmers to do a good job in
agricultural technology consultation, business
guidance, and follow-up services. In particular,
according to the climatic characteristics, early
arrangements should be made for replanting and
reseeding crop cultivation technical guidance to
ensure disaster prevention and mitigation to the
greatest extent.The plant protection department
should do a good job in the prediction and forecasting
of post-disaster diseases, insects and weeds, and
guide farmers to carry out the implementation of
integrated pest control technology; the soil and
fertilizer department should strengthen the monitoring
of soil temperature and humidity in the disaster-stricken
plots, and guide farmers to carry out replanting and
replanting in a timely manner. , to provide classified
guidance for water and fertilizer management of
4.Strengthen leadership to ensure disaster prevention,
mitigation and relief technologies are in place
The first is to strengthen leadership. After a major
natural disaster occurs, the technical working group
for disaster prevention, mitigation and relief should
promptly report technical measures for disaster
prevention, mitigation, and relief, epidemic reports,
and work suggestions to the leaders of relevant
departments, so as to actively organize forces to
carry out guidance on disaster relief work and service.
The second is to implement the system of division of
labor among leaders in disaster prevention and mitigation,
dispatching technicians to go deep into the disaster
area as soon as possible after the disaster, do a
good job in disaster investigation and analysis of the
impact on major crops, give full play to their own
work advantages, provide face-to-face guidance on
disaster prevention and mitigation, and implement
production self-rescue measures. Various measures
have been taken to improve the availability of various
disaster reduction and relief technologies, strive
to solve problems for the affected people, do
more practical things, help farmers resume production,
and ensure the smooth completion of the annual
agricultural production target.