Japonica-type conventional paddy rice breeding and cultivation technology

Abstract

The invention relates to a japonica-type conventional paddy rice breeding and cultivation technology, and relates to the field of agriculture. The invention especially relates to a paddy rice cultivation technology. With the japonica-type conventional paddy rice breeding and cultivation technology provided by the invention, a paddy rice easy lodging phenomenon can be solved, rice ear size is uniform, and yield is high. The technology is characterized in comprising the following steps: 1, breeding is carried out, wherein an ear row nursery is built; 500-1000 typical single-ear seeds are selected, and are respectively sowed and transplanted; the rice is planted in 5-10 Mu of ear row nursery; 2, strong seedlings are cultivated, and sowing is carried out at an appropriate time. A paddy nursery seedling sowing amount per Mu is 25-30kg, and a dry nursery seedling sowing amount per Mu is 35-40kg; 3, the transplanting specifications are that 20000-22000 seedlings are transplanted in every Mu when a seedling age is approximately 35 days; 4, fertilizer and water management are carried out according to a principle that heavy application should be carried out in an early stage, stable application should be carried out in a middle stage and supplementary application should be carried out in a late stage; and 5, available potassium content in mountain area soil is low, such that requirements of paddy rice growth cannot be satisfied. Therefore, if potassium is applied, a significant yield increase effect is provided. Calculated according to K2O potassium, when a potassium fertilizer dose is within a range of 5-10kg / 667m<2>, the potassium fertilizer dose is significantly positively correlated with yield.

Description

technical field

[0001] The invention belongs to the field of agriculture, and in particular relates to a paddy rice cultivation technique. Background technique

[0002] The fruit of rice is rice paddy, which is called rice or rice after shelling. Nearly half of the world's population, including almost all of East and Southeast Asia, eat rice. Rice is mainly distributed in tropical and subtropical regions of Asia and Africa. The history of rice cultivation can be traced back to Hunan, China, about 12000-16000 BC. In 1993, the Sino-US joint archaeological team discovered the world's earliest ancient cultivated rice in Yuchanyan, Dao County, about 14,000-18,000 years ago. After rice was widely planted in China, it gradually spread westward to India and was introduced to southern Europe in the Middle Ages. With the exception of the ecotype known as upland rice, rice is cultivated on flooded lands in coastal plains, tidal deltas and river basins in tropical, semi-tropical and...

Examples

Embodiment Construction

[0015] The breeding and cultivation technique of conventional japonica rice is characterized in that it comprises the following steps.

[0016] 1. Breeding, establishment of panicle nurseries, select 500-1000 typical single panicles, sow and transplant them respectively, and plant a total of 5-10 mu of panicle nurseries. The original seed was collected, and the ear rows with different performance traits were removed, and the ear rows that conformed to the characteristics of the variety and had the same performance were mixed to obtain the original seed. Propagate the original species and multiply the original species. Mixing should be avoided in every link of production. The field should be mixed 2 to 3 times, and the original species can be mixed.

[0017] 2. Cultivate strong seedlings and sow at the right time. The sowing rate per mu of water seedlings is 25-30kg, and the sowing rate per mu of dry seedlings is 35-40kg. Apply sufficient base fertilizer in the seedling field, ...

technical field

[0001] The invention belongs to the field of agriculture, and in particular relates to a paddy rice cultivation technique. Background technique

[0002] The fruit of rice is rice paddy, which is called rice or rice after shelling. Nearly half of the world's population, including almost all of East and Southeast Asia, eat rice. Rice is mainly distributed in tropical and subtropical regions of Asia and Africa. The history of rice cultivation can be traced back to Hunan, China, about 12000-16000 BC. In 1993, the Sino-US joint archaeological team discovered the world's earliest ancient cultivated rice in Yuchanyan, Dao County, about 14,000-18,000 years ago. After rice was widely planted in China, it gradually spread westward to India and was introduced to southern Europe in the Middle Ages. With the exception of the ecotype known as upland rice, rice is cultivated on flooded lands in coastal plains, tidal deltas and river basins in tropical, semi-tropical and...

Examples

Embodiment Construction

[0015] The breeding and cultivation technique of conventional japonica rice is characterized in that it comprises the following steps.

[0016] 1. Breeding, establishment of panicle nurseries, select 500-1000 typical single panicles, sow and transplant them respectively, and plant a total of 5-10 mu of panicle nurseries. The original seed was collected, and the ear rows with different performance traits were removed, and the ear rows that conformed to the characteristics of the variety and had the same performance were mixed to obtain the original seed. Propagate the original species and multiply the original species. Mixing should be avoided in every link of production. The field should be mixed 2 to 3 times, and the original species can be mixed.

[0017] 2. Cultivate strong seedlings and sow at the right time. The sowing rate per mu of water seedlings is 25-30kg, and the sowing rate per mu of dry seedlings is 35-40kg. Apply sufficient base fertilizer in the seedling field, ...