At present, the work of autumn sowing in Jingjiang City has basically ended. Generally speaking, the emergence of wheat is faster and the number of seedlings is higher, which lays a good foundation for the production of high-yielding spikes in the late period. However, due to the unfavorable factors such as the previous rainy weather, there are hidden dangers in safe wintering of wheat seedlings. Mainly in the following aspects. First, the individual is emaciated. Soybean buckwheat and interplanting wheat were sown in early leaves with thin leaves and pale leaves, and their frost resistance was not strong. The second is that coverage is not in place. The area of ​​native rice cultivation in this year has increased significantly, but most fields have not been covered effectively, with bare roots and slender wheat. The third is heavy grass. At present, most of the grasses in the plots are heavier, especially interplanting wheat. Fourth, the ditch is not complete. Farmers' awareness of waterlogging is not strong. A few plots have not been excavated within the Sangou area. Some of the plots' vertical trenches are still the original rice field productive trenches. Even if they open a trench, they cannot communicate with the outside three channels or they can't reach the two outlets. The poor quality of the field trench system and the lack of cleaning and dredging of public trenches such as Outer Sangou have long-standing difficulties in resisting stains. In this regard, all localities must categorize and manage according to actual production, and strive to nurture strong seedlings for safe wintering.
Based on disaster prevention, comprehensive control of this year's wheat freeze-thaw hazards is relatively large, especially the exposed wheat root system is vulnerable to freezing, and the straw field full amount of soil to loose, moisture content, easy to produce root extraction and interception. Production should pay great attention to the use of 15% paclobutrazol wettable powder 40 to 60 grams per acre spray control in the three-leaf 1 heart period of wheat to promote early-onset low birthing and prevent frost damage. For late-broadcast plots, if the emergence is insufficient, in the control of the same time to re-appropriate sub-fertilizer, urea 10 kg per mu, to promote the effective delivery before winter.
Cultivate strong seedlings, Pu Shi manure applied to the shallow rotary tillage wheat field, applying 5 kg of urea per acre; to the basal fertilizer shortage of field and interplanting wheat field urea 7.5 kg per mu; on straw field full amount of field Due to the nitrogen consumption of straw maturity and the deep application of basal fertilizer, it is difficult to achieve the seedling effect. It is required to apply 10 kg of urea per acre at the 3-leaf stage.
Strict standards, supporting the ditch to seize sunny high standards to build a corn-groove ditch system, ensure that the ditch system is matched, so that the ditch can communicate with each other, can irrigation energy row.
Early elimination, strive to take full advantage of the pre-winter temperature and light conditions, according to the field of grass-phase selection of efficient, safe, low-residue herbicide removal, the use of chlorsulfuron, metsulfuron-methyl and their mixed agents are prohibited. Apply enough water to ensure efficacy. Before the onset of the cold current, the use of drugs should be stopped. After the application of the rain, the water in the field should be excluded in time to prevent “frozen phytotoxicity†and “wet phytotoxicityâ€. Poor soil moisture and thin wheat fields should be hand weeded.
Cover seedling protection, cold-weather and frost-free seedlings must be quickly covered with rice straw, 100 kg per mu, the amount can not be too large, otherwise it is not conducive to photosynthesis of wheat seedlings. At the same time, combine the machine to open the ditch to appropriately increase the density of the ditch in the field, and use ditch cover as much as possible. For a small number of plots covered with too thick straw and high wheat seedlings, some straw should be removed as soon as possible to create good light conditions for the wheat seedlings.
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