Early rice seedling slinging cultivation method after full-amount returning of triple-cropping rape straw

Abstract

The invention belongs to the technical field of rice planting, and discloses an early rice seedling slinging cultivation method after full returning of triple-cropping rape straw. The method comprisesthe following steps: soaking seeds with a prochloraz liquid medicine or hymexazol, cleaning and soaking the seeds with clear water; applying a decomposed organic fertilizer and a ternary compound fertilizer as base fertilizers before the rice field is ploughed, and ploughing and raking the rice field with water; performing furrowing before sowing, and digging surrounding ditches around; determining a seeding time for seeding according to previous harvesting condition of rape and a suitable seedling transplanting age; conducting film mulching and heat preservation after sowing, and conductingseedling hardening after three leaves and one core; field preparation: after the oilseed rape is mature, timely combining the oilseed rape with mechanical harvesting, crushing straw, returning full amount to the field, performing shallow water irrigation, and performing rotary tillage after next-day base fertilizer application; and performing fertilizer application after seedling slinging. Lime isapplied at the same time to improve the field environment, normal growth of early rice in the later period is not affected, burning or abandoning of preceding crop straw in the field is reduced, thefertilizing amount and method after oilseed rape straw is returned to the field are optimized, time and labor are saved, the beneficial effect of being environmentally friendly is achieved, the environment is not polluted, and body health of people is protected.

Description

technical field [0001] The invention belongs to the technical field of rice planting, and in particular relates to a cultivation method for throwing seedlings of early rice after returning full amount of three-ripening rape stalks to the field. Background technique [0002] Straw is an important biological resource in the crop production system. Straw is rich in nitrogen, phosphorus, and potassium, as well as a large amount of trace elements and organic matter. At present, the research on rice straw returning to the field has made great progress, while rape straw returning to the field has not yet It is in its infancy, especially under the three-crop cultivation mode, there is little research on rapeseed straw returning to the field. At present, in the practice of returning full amount of "oil rice" straw to the field for fertilization, the phenomenon of yellowing, emaciation and poor tillering ability of double-cropping rice seedlings often occurs, which eventually leads to...

AI Technical Summary

Problems solved by technology

At present, in the practice of returning full amount of "oil rice" straw to the field for fertilizer utilization, the phenomenon of yellowing, emaciation, and poor tillering ability of double-cropping rice seedlings often occurs, which eventually leads to fewer effective panicles and reduced yield

There are three main reasons for this: first, in the "oil rice" system, the crops are tight and the seedling age is prolonged, resulting in poor quality of seedlings; second, the carbon and nitrogen of straw are relatively large, and there are microorganisms competing with crops for nitrogen during decomposition, and the number of pathogenic bacteria increases sharply , Consumption of a large amount of oxygen, lack of oxygen, the accumulation of reducing substances in the soil, especially the accumulation of active reducing substances, and the further acidification of the crop environment will affect the growth and development of rice seedlings, resulting in stiff seedlings, short plants, and slow tillering; Save seed cost and labor. In actual production, there are basically few seedlings, and it is used to increase the total amount of nitrogen fertilizer application and increase the nitrogen fertilizer input in the early growth stage, which affects rice yield and fertilizer use efficiency.

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