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...

AI Technical Summary

Problems solved by technology

However, in recent years, due to changes in the climatic conditions of the area and the increasing scarcity of water resources, the production area of ​​high-quality rice in the Beijing-Tianjin-Tangzhou rice region has decreased greatly, and high-yield and high-quality rice varieties suitable for the production needs of this area are relatively scarce.

Moreover, problems such as the easy lodging phenomenon and the uneven size of rice ears that are easy to occur in rice need to be solved urgently.