青海省的农业耕地在北方各省中是最少的,而春油菜种植面积却居北方各省之首。至2000年,春油菜在青海已成为第一大作物,创造了我国第一个以油菜为主作物的生态农业省。这是田正科研究员在30多年前就提出的,青海应以耐寒抗灾的春油菜为生态农业主作物理念的实现。田正科在长期的高原农业研究中,觉察到春油菜的耐寒性、速生性和多花性,是应对霜冻、冰雹、风沙等高原恶劣气候的三大法 Qinghai Province has the least cultivated land in the northern provinces, while the spring rapeseed area ranks the first among the northern provinces. By 2000, spring rapeseed has become the largest crop in Qinghai, creating the first eco-agricultural province in China that mainly produces rape. This is Tianzheng Ke researcher put forward more than 30 years ago, Qinghai should be hardy and resistant spring rape as the main concept of ecological agriculture to achieve. Tianzheng Ke in the long-term plateau agricultural research, aware of the spring rape cold tolerance, rapid growth and more flowering, is to deal with frost, hail, sandstorms and other harsh climate of the three major law