绿萍是一种含氮较高的植物肥料。它不占用良田,花工省、收效大。而且还能抑制田间杂草。去冬长期低温,天气干燥,对越冬绿萍造成极大损失。因此,养好早稻田绿萍,夺取早稻丰收,从思想上,物质基础上,技术措施上要严格掌握好早稻田养萍的“一足、二壮、三要、四注意”的技术环节。一足:放养萍种量要足。放足萍种是促使绿萍早旺,打下绿萍高产早倒萍的基础,故要 Luping is a high nitrogen fertilizer plant. It does not take up fertile land, spend engineering province, big effect. But also can restrain field weeds. Long-term cold to the winter, the weather is dry, causing great losses on wintering greens. Therefore, we should keep the good harvest of early rice paddy fields and seize the harvest of early rice. From the ideological, material and technological measures, we must strictly grasp the technical aspects of “one foot, two strong, three important and four attentive” of Waseda Pratas. A foot: stocking level should be enough. Putting foot-ping species is to promote green asparagus earlier, lay the foundation for high-yielding green shoots early Ping, so want