At present, the autumn sowing work in Jingjiang City has basically ended. Generally speaking, wheat has a quick emergence and a large number of seedlings, which lays a good foundation for the high yield of the foot and spike. However, due to the adverse factors such as the previous rainy weather, the wheat seedlings have hidden dangers in winter. Mainly in the following aspects. First, the individual is thin. The early sowing soybeans and the sowing wheat leaves are thin, the leaves are light, and the anti-freezing ability is not strong. Second, the coverage is not in place. This year, the area of ​​native rice straw cultivation has increased significantly, but most of the fields have not been effectively covered, the roots are bare and the wheat is slender. Third, the grass is heavy. At present, most of the grasses in the field are heavier, especially in the case of wheat, and grasshoppers have appeared. Fourth, the ditch system is not matched. Farmers are not aware of the prevention of waterlogging. The three ditches in the few plots have not been excavated. Some of the vertical ditch of the plots are still the original paddy fields. Some even open the ditch, but they are not connected to the outer ditch or can not be discharged at both ends. The quality of the field ditch system is poor, and the public ditch system such as Waisangou lacks long-term cleaning and dredging, and the ability to resist water stains is not strong. In this regard, all localities should be managed according to the actual production classification, and strive to cultivate strong seedlings for safe wintering.
Based on the disaster prevention and comprehensive control, this year's wheat freeze damage is relatively large, especially the wheat roots exposed to the frozen roots are easy to be frozen, and the soil with the total amount of straw returned to the field is loose and has a large water content, which is easy to produce roots and cuts. It is necessary to pay great attention to the production. In the wheat 3 leaf 1 heart period, 15% paclobutrazol wettable powder 40~60g spray control is used per acre to promote early low-level tillering and prevent freezing damage. For the late-casting field, if the seedling is insufficient, the fertilizer should be re-applied at the same time as the chemical control, and 10 kg of urea per acre should be used to promote the effective tillering before winter.
Cultivate strong seedlings, apply the fertilizer to the shallow-rotating wheat field where the base fertilizer is applied, apply 5 kg of urea per mu; apply 7.5 kg of urea per mu to the field with insufficient base fertilizer and the wheat field in the wheat field; Because the straw is decomposed to consume nitrogen, and the base fertilizer is applied deeper, it is difficult to exert the seedling effect, and it is required to apply 10 kg of urea per acre in the 3-leaf stage.
Strict standards, supporting the ditch system to grasp the high standard of the construction of wheat field ditch, to ensure that the ditch system is matched, so that the ditch and the ditch can communicate and can be discharged.
Early use, strive to take the initiative to make full use of the warm-light conditions before winter, according to the field grass phase selection of efficient, safe, low-residue herbicide removal, chlorsulfuron-methyl, metsulfuron-methyl and its compounding agents are prohibited. When applying the medicine, add enough water to ensure the efficacy. Stop using the medicine before the cold current, and remove the accumulated water in the field in case of rain after application, to prevent "freezing medicine" and "wet medicine". Soils with poor soil moisture and thin wheat seedlings should be artificially weeded.
Covering seedlings, cold-proof and anti-freezing uncovered cover wheat fields should be quickly covered with rice straw, 100 kg per acre, the coverage should not be too large, otherwise it is not conducive to wheat seedling photosynthesis. At the same time, combined with the machine ditch to increase the density of the field ditch, and use the mud to cover as much as possible. For a few fields where the straw is too thick and the wheat seedlings are already high, some straw should be removed as soon as possible to create good lighting conditions for the wheat seedlings.
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