Method for planting rice by mixed seeding based on rice quality improvement and yield increment

Abstract

The invention belongs to the field of rice cultivation, and in particular relates to a method for planting rice by mixed seeding based on rice quality improvement and yield increment, which comprises the following steps: (1) selecting three rice varieties of E-zhong No.5, E-xiang No.1 and Jianzhen No.2 as the varieties for mixed seeding and planting; (2) seeding in an area between north latitude 27 degrees and north latitude 33 degrees during April 10 to May 5; (3) mixing seeds of the varieties selected from the step 1 uniformly in a mass ratio of 5:2:3 before seeding; (4) planting the seeds in wide and narrow rows, wherein a row spacing between wide rows is 30cm; the row spacing between narrow rows is 16.5cm; a planting distance is between 14.7 and 16.5 cm; and the planting density is 17,380 to 19,500 plants in every 666.7 square meters; and (5) applying 11 to 12 kilograms of pure nitrogen to each 666.7 square meters during the growth period of the rice, wherein the pure nitrogen comprises 60 percent of base fertilizer, 20 to 25 percent of tillering fertilizer, 0 to 10 percent of flower promoting fertilizer, and 10 to 15 percent of flower preserving fertilizer; the mass ratio of N:P2O5:K2O is 1:0.4 to 0.5:0.8 to 1. The method for planting rice by mixed seeding has the advantages of achieving advantage complementary of different varieties of the rice in different genotypes, increasing rice yield and improving rice quality, which is an innovative cropping method.

Description

technical field [0001] The invention belongs to the field of rice planting, and in particular relates to a rice mixed planting method based on improving rice quality and increasing yield. Background technique [0002] With the continuous improvement of people's living standards in our country, the quality requirements for the consumed rice are also continuously improved. As far as the quality of rice is concerned, in addition to the appearance quality required by the purchase and the processing quality expected by the processor, what the actual consumer needs is the eating quality. As for hybrid rice, which plays an extremely important role in my country's grain production, although its rice quality has improved significantly in recent years, compared with high-quality conventional rice, there is still a big gap, and it cannot meet consumers' requirements for food taste. . On the one hand, the yield of high-quality conventional rice is generally relatively low, and the yiel...

AI Technical Summary

Problems solved by technology

[0003] The main problems in the cultivation of high-quality rice at present: ①The yield per unit area of ​​most varieties is low, and the yield per mu is 400-450kg / 666.7m 2

②Many high-quality rice varieties are prone to lodging and affect yield due to high stalks or poor filling of stem nodes at the base of the stalks

③Many special flavor varieties such as fragrant rice, in the production process, their planting fields are often places where planthoppers and other pests are concentrated. On the one hand, the production cost is increased, and at the same time, there are pesticide residues in rice caused by inadequate early control and later pest control question