The yield of Vietnamese hybrid rice is 15-20% higher than pure rice.

The international workshop on the situation and solutions for sustainable development of hybrid rice and agricultural ecosystems took place in Hanoi confirmed that the yield of hybrid rice is 15 - 20% higher than pure rice.

The seminar was organized by Hanoi University of Agriculture 1 in collaboration with Japan Science Development Association on 23rd and 24th November, with the participation of Vietnamese experts, scientists and countries. Japan, Philippines, India, Banglalesh, Germany, United States .

Hybrid rice has been cultivated in Vietnam since 1991. Currently, hybrid rice area is over 600,000 ha annually with an average yield of 6-6.3 tons / ha, 15-20% higher than pure rice. The use of hybrid rice has contributed to improving productivity, rice production and creating more jobs, increasing income for farmers through the production of hybrid seeds. Hybrid rice contributes to ensuring food security in many northern and central provinces.

Hanoi Agricultural University 1 has achieved some achievements in research and development of hybrid rice, in cooperation with international organizations such as FAO, International Rice Research Institute, and some research institutes of China and Kyushu University (Japan).

Hybrid rice is grown in Ha Tay
(Photo: ND)

Associate Professor - Dr. Tran Duc Vien, Rector of Hanoi University of Agriculture 1 said: ' Viet Lai 20 variety created by the school in 2004 has been recognized as the first national variety of Vietnam. Since then, many other hybrid rice varieties have been established such as TH3-3, TH5-1, TH 3-4 and Viet Lai 24, these varieties have also been recognized as national varieties and are being produced on area of ​​tens of thousands of hectares'.

In order to develop hybrid rice in addition to creating a high-yielding hybrid complex, it is necessary to create varieties with good quality and resistance to pests and diseases. The first national rice variety Viet Lai 20 gives good yield and short growth time but still suffers from blight. According to Dr. Atsushi Yosshimura, Kyushu University and scientists, the solution to counteract this disease in hybrid rice is to convert the Xa21 blight resistance gene into the 103S strain through hybridization and selection based on directives. molecular marker. Hopefully, after applying this solution to actual production, one Vietnamese Lai 20 rice crop will take about 90 days to harvest and the productivity will increase, from 8-9 tons / ha.

Experts said that it is possible to prevent white hoppers and small leaf bollworms during the period of rounding by mixing a mixture of pesticides and small leaf back hoppers to save one time of spraying. In addition, the prevention of thrips should use medicinal herbs. Rice should also be planted with moderate density, 40-45 clumps / m ² to limit pests and diseases.

At the workshop, several solutions for sustainable development of hybrid rice in Vietnam were introduced. That is improving research capacity, production capacity of hybrid rice seeds and quality control of hybrid rice seeds in the country. Choosing hybrid rice is a very effective breeding method in our country dealing with diversity in terms of geography, climate and society. This method reduces breeding time and opens up the possibility of widespread application of genetic resources of rice.

A hybrid rice intensification solution reduces input costs, reduces fertilizer and increases rice yields by up to 20% compared to traditional farming methods, using deep fertilizer pellets, a new production technique. created by scientists at Hanoi University of Agriculture 1 and applied effectively in many parts of the country. This measure will contribute to sustainable agricultural development as well as environmental protection.

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