Qingzhou king grave town waist zhuang village villagers Li Changzhu hard working on more than 30 years developed a new wheat varieties - "purple wheat pearl no.1", passed the national ministry of agriculture and food quality supervision, inspection and test center testing. Tests showed: purple wheat contain beneficial to human body selenium, calcium, zinc, copper, phosphorus, iron, magnesium, and other mineral elements, content are higher than ordinary wheat of different level.

Li Changzhu started in 1972 with wild purple wheat, wheat and wheat varieties bred for decades, he again and again to jinan, weifang, consult and agricultural technology experts, and a lot of trouble to do experiments, through numerous setbacks and failures.

Li Changzhu did not flinch but difficulties, with the obsession with agricultural science and technology and love, he never gave up to study and test of purple wheat. Whoever helps them not, in the summer of 2007, after 35 years of hard study and after a long wait, Li Changzhu cultivation of "purple wheat" finally won initial success.

Since 2008, Li Changzhu began to expand the purple wheat planting area, and constantly carry on the purification and rejuvenation, now is 7 years later, he studied the purple wheat because of the frost resistance and drought resistance, resistance to lodging, obvious characteristics, has been gradually recognized, countrymen planting area is gradually expanding.

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