Pollution-free direct-seeding cultivation method of single late japonica rice

Abstract

The invention discloses a pollution-free direct-seeding cultivation method of single late japonica rice. The method comprises the following steps that seed treatment is conducted; after preceding crops are harvested, 150 mL of paraquat and 45 kg of water are blended and applied to the field per mu for stubble removing and weeding, and base fertilizer application and soil preparation are conducted; seeding and closed weeding are conducted; weeding is conducted again when the rice is in the stage that two leaves and one terminal bud grow out and a person can stand on the ground of the rice field, and then irrigation is conducted; draining and soil drying in field are immediately conducted when 320-360 stem and tiller seedlings appear in the field per square meter; top dressing of a stem elongating and blossom promoting fertilizer is conducted when the remaining leaf primordium number of rice seedlings is 3.5; top dressing is conducted when the remaining leaf primordium number of a main stem is 1.5; panicle blast, rice false smut, banded sclerotial blight, rice planthoppers, rice leaf folder and borer pests are prevented and treated 10-15 days before the crevasse period and 3-5 days before the crevasse period. According to the pollution-free direct-seeding cultivation method of the single late japonica rice, seeding is conducted directly after soil preparation is conducted, rice seedling raising and seedling transplant are not needed, a large amount of labor is saved, and the labor seasonal tense contradiction is relieved; closed weeding is conducted after seeding is conducted, weeding is conducted again when the rice is in the stage that two leaves and one terminal bud grow out and the person can stand on the ground of the rice field, and the weeding efficiency is high.

Description

technical field

[0001] The invention relates to the field of rice cultivation, in particular to a pollution-free direct seeding cultivation method for single-season late japonica rice. Background technique

[0002] Rice is one of the most important food crops in China and has an important strategic position in China's food production. The area of ​​rice in my country accounts for about 29% of the total area of ​​food crops, and the total output accounts for 44% of the country's total food production. More than 90% of it is concentrated In the southern rice-growing areas, double-cropping rice accounts for more than a quarter of the country's rice planting area, mainly concentrated in Jiangxi, Hunan, Guangdong, and Guangxi. Rice is also one of the crops that require the most fertilizer. Extensive fertilization increases the cost of crop production, pollutes the environment, and causes energy waste. The increase in rice yield and fertilizer utilization has an important relations...