农户选种留种贮种简易方法良种是增产的重要因素之一。国家种子部门有时因种源及运输条件限制，时常不能及时满足需要。对一般常规种子，农户可以自己选种留种，不仅可以缓和种源不足的矛盾，而且可以防止品种混杂退化，避免使用假劣种子，提高用种质量和节约购种成本。常... One of the important factors for yield increase is the simple method for selecting farmer households for seed storage. Sometimes national seed departments are often unable to meet their needs in time because of provenance and transport constraints. For conventional conventional seeds, farmers can choose their own species for seed selection, which can not only ease the contradiction of lack of provenances, but also prevent the hybrids from being degraded, avoid the use of counterfeit seeds, improve the quality of seeds used for planting and the cost of purchasing. often...