Chinese team to turn 6.7 mln hectares of saline-alkali land into paddies

Experts estimate the output of saline-alkali tolerant rice at a demonstration base in Hanting District of Weifang City, east China's Shandong Province, Oct. 16, 2020. [Xinhua/Guo Xulei]

SANYA -- The team of renowned agronomist Yuan Longping on Friday said they planned to plant saline-alkali soil rice to transform 6.7 million hectares of saline-alkali land in China over the next eight to 10 years.

The team led by Yuan, dubbed China's "father of hybrid rice," said they had already signed contracts to reclaim 400,000 hectares of saline-alkali land in China and will strive to plant saline-alkali soil rice on one-sixth of the land this year.

The announcement was made at a forum on saline-alkali soil rice held in the city of Sanya, south China's Hainan Province.

"In 2020, we made great strides in the breeding, cultivation techniques and soil improvement of saline-alkali tolerant rice. With joint efforts, we will no doubt achieve the goal of turning 100 million mu (6.7 million hectares) of saline-alkali soil into fertile land," the 90-year-old agronomist said in a video message at the forum.

Yuan's team successfully developed varieties of saline-alkali tolerant rice in 2017, with the highest average yield of over 800 kg per mu, or 12 tonnes per hectare, recorded in Jiangsu Province last year.

Last year, the Qingdao Saline-Alkali Tolerant Rice Research and Development Center led by Yuan expanded the ambitious program by planting about 6,667 hectares of saline-alkali soil rice in ten bases across the country.

Zhu Ming, an academician with the International Eurasian Academy of Sciences, said China's promotion of saline-alkali soil rice planting is of great significance to safeguarding food security as the country has large swathes of uncultivated saline-alkali land.

China has about 100 million hectares of saline-alkali soil, of which about one-fifth could be ameliorated to arable soil.

Despite years of bumper harvests, China is still in need of more arable land, said Mi Tiezhu, vice director of the Qingdao Saline-Alkali Tolerant Rice Research and Development Center. China now feeds around 20 percent of the world's population with less than 9 percent of the world's arable land.

Mi said on average, the output of saline-alkali tolerant rice across all planting areas stood at more than six tonnes per hectare, which is economically viable for farmers.

"If the (saline-alkali) land can be used to grow rice and produce grain, it means that some acreage can be set aside for producing other cash crops," said Mi, also a member of Yuan's team. The ambitious program could thus help China reduce its reliance on imports for corn and soybean, Mi said.

These efforts to increase food production will also benefit the global food supply and contribute to achieving the UN zero hunger goal, he said.

Global grain production and agriculture must make considerable changes in a bid to help eradicate hunger for 925 million people in the world and feed the newly-added population of 2 billion by 2050, said Yang Lin, a member of the Steering Committee of the Global Coalition of Think Tank Networks for the UN's South-South Cooperation.

China's saline-alkali soil rice is transforming agricultural production and the large-scale planting across China and around the world has a direct bearing on global sustainable development, Yang said.

It is of practical significance and great urgency to promote the planting of saline-alkali soil rice when the food issue is becoming more prominent amid the raging COVID-19 pandemic, said Wang Nan, a researcher with China-Africa Institute.

China can strengthen cooperation with Africa as food security there still faces severe challenges, Wang added.