To solve dosage big, with the question with much seedling, can adopt land for growing field crops to breed quickly, enlarge progenitive coefficient, satisfy market demand.

• 环境上要求阳光充足；无积水；土质以肥沃的胶质壤土；或菜园土.；水稻田为好。避免荫蔽处；雨水积水之地。