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1紫云英生产及种子采购招标的特点1.1紫云英生长特点及种子特性紫云英又名红花草,属一年生或越年生草本,性喜温暖湿润条件,对土壤要求不严,以p H5.5~7.5的沙质和黏质壤土较为适宜。异花传粉,杂交率较高,一般紫云英鲜草产量可达22 500kg/hm2以上,紫云英种子900kg/hm2左右。由于紫云英鲜草养分含量和饲料价值均较高,所以,中国南方用作稻田冬季绿肥栽种。据研究,紫云英鲜草还田,能提高耕层土壤有机质含
1 Shiyunui production and seed procurement tender features 1.1 Shiyunying growth characteristics and seed characteristics Shiyun English also known as safflower grass, is an annual or perennial herb, sexual hi warm and humid conditions, the requirements of the soil lax to p H5 The sandy and clayey soils of .5 ~ 7.5 are suitable. Cross-pollination, high rate of hybridization, the general production of fresh milk vetch up up to 22 500kg / hm2, milk vetch seed 900kg / hm2 or so. Due to its high nutrient content and feed value, the South China is used for winter green manure cultivation in paddy fields. According to the study, milk vetiver backyard, can improve soil organic matter content