Cultivation method for improving yield per mu of rice

Abstract

The invention discloses a cultivation method for improving the yield per mu of rice. The cultivation method is characterized by comprising the following steps: S1, selecting full seeds with good stress resistance and yielding ability according to soil properties and climatic characteristics of a planting area; S2, airing selected seeds for 6 to 10 hours; S3, treating aired seeds; S4, disinfectingthe seeds; S5, cultivating rice seedlings; S6, carrying out chemical weeding; S7, lengthening a shaft for mounting a planting arm in a rotary box of an improved rice transplanter by 5 cm, namely respectively widening a row spacing by 5 cm to reach an average row spacing of 35 cm so as to achieve the purposes of widening the row spacing and simultaneously shortening a hole spacing; S8, carrying outregular fertilization, wherein fertilizer application is performed three days after transplanting to promote green turning, and in a tillering beginning period, tillering fertilizer reapplication andtimely booting fertilizer application are performed; and S9, regularly irrigating a rice field. The cultivation method provided by the invention has the advantages of increasing the yield per mu of the rice, reducing the usage amount of a pesticide and a fertilizer and reducing pesticide residues.

Description

technical field [0001] The invention relates to the technical field of rice planting, in particular to a cultivation method for improving rice yield per mu. Background technique [0002] The northern japonica rice-growing areas, especially the three northeastern provinces, basically borrowed rice-growing techniques from Japan. Especially in recent years, in order to solve the problem of light in many places, the density of transplanting rice seedlings is 9×5 and 9×6 inches. The basic number of seedlings per square meter is seriously insufficient. In order to obtain more effective panicles within the limited tillering time, farmers have to use excessive chemical fertilizers to promote tillering; the result is that not only did not reach 450 effective panicles per square meter, The yield of rice per mu has always hovered at 1300 jin, which is currently a bottleneck for increasing the yield of rice in the north. Moreover, due to excessive chemical fertilizer and pesticide res...

AI Technical Summary

Problems solved by technology

The basic number of seedlings per square meter is seriously insufficient. In order to obtain more effective spikes within the limited tillering time, farmers have to use excessive chemical fertilizers to promote tillering; the result is that not only did not reach 450 effective spikes per square meter, The yield of rice per mu has always hovered at 1300 jin, which is currently a bottleneck for increasing the yield of rice in the north

Moreover, due to excessive chemical fertilizer and pesticide residues in the grain, the quality of rice is affected.