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一、前言我国杂交水稻的育成和大面积推广种植,对水稻增产和稻米品质改良起着举世瞩目的作用。但是,由于种子管理的技术问题,每年种子装错、放错、发错和种错,以及投机贩卖所造成的人力、物力和财力的损失是不少的。因此,非常有必要商榷对策,为国家,为农民挽回或减少损失。查阅美国种子管理资料得知,本世纪初,美国农业部发现许多进口的苜蓿和三叶草种子杂质多,发芽率低,质量差,于是在1926年修订联邦种子法时,规定苜蓿和三叶草种子必须染成不同颜色,以保证进口种子纯度,从而使播种后作物生长一致。
I. INTRODUCTION The breeding of hybrid rice and the popularization of hybrid rice in China have played a remarkable role in increasing rice yield and rice quality. However, because of the technical problems of seed management, the loss of manpower, material resources and financial resources caused by the misplacing, misplacing, wrong and wrong seeds, and speculative sales of seeds each year is quite a problem. Therefore, it is very necessary to discuss countermeasures for the country, for the farmers to restore or reduce losses. In the early 2000s, the USDA found that many of the imported alfalfa and clover seeds contained more impurities and had a poor germination rate. Therefore, when the federal seed law was amended in 1926, it was stipulated that alfalfa and clover seeds must be dyed Into different colors, in order to ensure the purity of imported seeds, so that crop growth after sowing.