The world's leading research on four major crops in China

OA show ('918 '); our reporter (Liu Jingzhi) learned from the Ministry of science and technology that China has achieved the international leading position in the research of four major crops: rice, rape, soybean and wheat Rice is the largest food crop in China, in which hybrid rice accounts for about 55% of the planting area, and the average yield of hybrid rice is 15-20% higher than that of conventional rice Our country is in the international leading level in both two-line method and three-line method of rice hybrid breeding research The planting area of rape in China is about 100 million mu, of which 30% is hybrid rape The research and application of hybrid rape in China are in the leading position in the world At present, there are 37 approved rape hybrids, among which the double low yellow seed rape has outstanding quality China is the country of origin of soybeans and was once the world's largest soybean exporter However, in recent years, due to the per unit yield lower than the world average, the total output only accounts for 11% of the world (far lower than the United States and Brazil and other countries), which has changed from an exporter to an importer, with an average annual import of more than 2 million tons In order to reverse this situation, great breakthroughs have been made in the field of agricultural research in China A group of experts, such as sun Huan of Jilin Academy of Agricultural Sciences, have made great achievements in the research of soybean sterile lines and seed production technology, which will play an important role in restoring China's soybean production as a major country China is a large country of wheat production, and wheat is the second largest food crop in China, with an annual planting area of 450 million mu China began to study the Heterosis of wheat heterosis in 1965, and now it has gained the leading position in the world China feed industry information network zb9 (author:)