Question: The basic seedlings are generally insufficient
“After continuous sowing with high temperature and little rain, the emergence of wheat in some regions was not well-ordered, the basic seedlings were insufficient, the land masses were extremely unbalanced, and the same field was also uneven. The rice and bran was still dominated by no-tillage sowing. The soil surface was dry, the emergence of seedlings was slow, and the basic seedlings were significantly lower than the normal years.In the dry areas such as Jianyang, Zhongjiang, Santai, etc., the drought-resisting wheat was also affected by the drought, and no sowing water or water was used for sowing. The plots have less seedlings, and the growth is very weak, and the amount of growth is significantly insufficient.†The current problem of wheat production in our province is in the words of Tang Yonglu.
Countermeasures: Focusing on "promoting" the field management
In view of the existing problems, Tang Yonglu reminded the farmers of friends to take "promotion" as the main focus, and to grasp the management of spring wheat fields in light of the developmental stages of the wheat stage and weather changes. For wheat fields with small populations, insufficient growth, or lack of fertilizers and yellowing, as soon as possible to apply fast-acting fertilizers, promote the growth of Oita pods and floret differentiation, so as to increase the percentage of spikes, increase the number of grains per ear, and make up for the lack of groups.
In the dry area, where there is no manure or lack of labor, the urea can be sprinkled on the wheat belt first, and then the slashing soil can be used. The current good soil and gradually increasing rainwater can be used to make the fertilizer melt in the tillage layer to absorb the wheat seedlings. use. Specific operation methods:
The basic wheat seedlings of the buckwheat rice in the plain area are generally insufficient, and they are currently or are being jointed. It is necessary to pay close attention to the extraction of joint fertilizer and water conservation. Applying 6-10 kilograms of urea per acre promotes the growth of Oita and the differentiation of florets. The method of application, it is best to water, until the field is basically no clear water sprinkled fertilizer material.
For those with large minority populations, prosperous growth fields or high plant varieties, if they are in the jointing stage, they can spray growth retardants such as Chlorothorin or dwarf, in order to reduce plant height and control lodging. The spraying of pesticide should be even and not too heavy, otherwise it will affect the output.
In the hilly area, dryland and shallow hilly wheat area is the main body of wheat production in our province, mainly interplanting wheat. In the old dry areas such as Santai, Zhongjiang and Jianyang, due to the impact of drought, the basic seedlings were generally insufficient, the population was small and growth was weak, and a considerable number of wheat fields were delayed because of sowing, resulting in a small population. In addition, the plough layer is thin on dry slope land, and is susceptible to drought in the later period. Therefore, the current overall should be "promoted" as the main, small groups, weak growth or lack of fertilizer land, per acre intercropping wheat topdressing urea 5-8 kg to promote growth and floret differentiation. The available phosphorus in the wheat area of ​​the basin is generally lacking, and it is best to use urea and diammonium phosphate in combination. As far as possible, chemical fertilizers are used in the application of manure, and it is not enough. It is also necessary to combine the work of drawing and spreading fertilizers on topsoil to enhance fertilizer efficiency.
There are different degrees of wet hazards in rice-barley fields in Qinggou Drainage Plains and Hills, especially the jointing-to-heading stage is a sensitive period for wheat wetness. If the soil is too wet, the root activity will decrease and the fertilizer absorption function will weaken. In severe fields, a large number of tillers will die and the rate of spike formation will decrease. Therefore, before the onset of the spring rain, we must open up the side ditch, gutter and drainage ditch, strengthen the drainage work of the ditch, lower the groundwater level, and eliminate waterlogging.
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