Lodging is one of the major factors affecting wheat production. Loss of yield caused by different lodging times is also different. Generally, the output of field plots is reduced by 10-30%, and severe plots are reduced by more than 50%. Therefore, the lodging of wheat should be prevented early.
1, suitable amount of sowing. The suitable sowing date for the semi-wintering wheat varieties with strong tillering ability in northern Jiangsu is October 5-20. For fine seed sowing, the seed amount per mu is 4-6 kg; for semi-precision seeding, the seed amount per mu is 6-8 kg; the sowing stalk cultivation needs to increase the seeding amount per mu; Seedlings maintained at 30-35 million.
2, rational application of fertilizer. The principles of fertilization combining organic manure and inorganic manure were adopted, and basal fertilizer and top dressing were rationally applied. Nitrogen, phosphorus and potassium three element fertilizers were applied before sowing. In the stage of returning green wheat to jointing stage, topdressing should be reasonably applied depending on the seedling condition, wheat varieties, and soil fertility, so as to facilitate the prevention of the strong stalks from falling. When the wheat is jointed, the leaves with large leaves and drape, dark green leaves, and white and tender stems cannot be topdressed. For high-stalked and infertile varieties, top dressings were less applied, and dwarf and fertilizer-tolerant varieties were topped with more fertilizer. Fertilizers in the fields with little or no fertilizer are applied. Sandy soil with insufficient fertility and poor water retention and fertility can be topdressed in multiple stages. Can not be partial nitrogen fertilizer, with the application of phosphorus and potassium fertilizer and trace element fertilizer.
3, cultivator weeding soil. Combining fertilization with cultivating and cultivating soil after turning green wheat. Scratch 1-2 times between the rows of wheat and transfer the soil to the roots of the wheat.
4, reasonable density. Large groups of wheat fields should be reasonably dense, in order to improve the ventilation and light conditions in the field, to promote the growth of thick stalks, and to increase the lodging resistance of wheat.
5, hormone regulation. The wheat fields that are oversized, over-prosperous, and prone to lodging tend to be sprayed with Chlormequat or paclobutrazol at the initial stage of wheat growth to inhibit the length and dwarfing of wheat seedlings, increase the thickness of stems, and prevent yield loss. Use 30-40 kg of CMC solution per acre with a concentration of 1000-2500 mg/L; or 30-40 kg of water plus 30-40 kg of water for each AP.
Tri-layer Lamination,Viscose PE Film Spunbond Fabric,Spunlace Spunbond Fabric,PE Film Laminated Nonwoven Fabric,Absorbent Lamination
XINLE HUABAO MEDICAL PRODUCTS CO.,LTD. , https://www.golbaltravel.com