After many years of practice, it has been proved that corn is a crop that requires large amounts of water but is not tolerant to growth. When the soil moisture exceeds 80% of the maximum water holding capacity, corn will be poorly developed.
Since July, frequent rainstorms, super-saturated soil moisture, corn roots are not normally metabolized due to lack of oxygen, and the ability to absorb water and nutrients has decreased; aerobic respiration has been inhibited, anaerobic respiration has been intensified, and large amounts of nutrients have been consumed while producing large amounts of nutrients. Roots are toxic substances; photosynthesis of the leaves is reduced or even stopped, growth and development are severely inhibited, and even lead to plant death.
How to take effective measures to deal with cornfield disasters? The performance of tolerance at different stages of growth and its effects on maize yield are different. At present, corn has entered the grain filling stage. Although the damage of corn has caused some influence on the growth and development of maize plants, if the field drainage is timely and strengthens the post-field management Short-term damage will have little effect on the final yield of corn.
Therefore, it is recommended to take corresponding measures according to the degree of disaster relief:
For fields that have not been reclaimed, field water should be eliminated completely. It is not recommended to artificially raise the corn that can yield the lodging. It is advisable to cut off empty stalks and sick plants, hit the bottom leaves, spray potassium dihydrogen phosphate, and peel and air dry to promote early maturing measures to accelerate grain maturation.
For those fields that have not returned lodging or lodging, the first is to take up the chemical fertilizer and promote grouting. To increase nitrogen fertilizer and potash fertilizer in the plots that exclude water, apply 150-225 kg nitrogen fertilizer and 15 kg potassium fertilizer per hectare; spray Zhuang root agent to speed up growth and development and promote grouting maturity. The second is to break the consolidation of cultivators. When water can be drained and discharged, the soil permeability can be improved as much as possible, and the ground temperature can be increased. The root physiological activity and plant photosynthesis can be restored as soon as possible, and the increase of grain weight can be promoted. The third is to prevent pests from reducing losses. After harvesting, the plants are susceptible to leaf diseases, and the prevention and treatment of large and small leaf spot, stalk rot, and corn borer are important. The control of sheath blight can be performed with carbendazim spray. Spraying should focus on spraying the stems and leaves below the ear. ; Prevention and treatment of size spots available chlorothalonil or thiophanate methyl, 7 to 10 days once, 2 or 3 times in a row. Reduce controllable pest losses.
In addition, for the requisitioned plots, the autumn crops shall be planted according to the specific conditions of the local accumulated temperature; if any crops cannot be planted, it is recommended that the lodging plants be converted into silage, and the deep plowing preparations should be carried out early to remove the compaction and create a deep soil tillage. Precipitation in autumn and winter creates good conditions for spring sowing next year.
Steroids,Corticosteroids,S4 Steroids Capsules,Steroid M K677
Shaanxi Hongbaiyi Biotech Co., Ltd. , https://www.sxhongbaiyi.com