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紫云英和红萍是我省水稻生产上的两种重要肥源。近年来,随着稻区改制的发展,连作稻面积迅速扩大,稻田复种指数不断提高,早稻插秧季节相对提前,紫云英和红萍在春季的有效生长季节相对缩短,给绿肥高产带来了新问题。为探讨紫云英和红萍在春季加速生长繁殖的途径,我们在农村基点中,与贫下中农一起开展了紫云英和红萍喷施“九二○”的科学实验,初步肯定了“九二○”有促进紫云英、红萍加速生长繁殖的效果。一、“九二○”对紫云英的效果
Astragalus and Hongping rice production in our province are two important sources of fertilizer. In recent years, with the development of the rice area reform, the area of continuous cropping rice has been rapidly expanded, the multiple cropping index of rice fields has been continuously increased, the season of early rice transplanting has been relatively advanced, and the effective growing season of Astragalus sinicus and red rhizome has been relatively shortened, bringing a new yield to green manures problem. In order to explore ways of accelerating growth and reproduction of Astragalus adsitosum and red duckweed in the spring, we carried out the scientific experiments of spraying “Chinese medicinal materials” and “Red Seaweed” with the poor middle peasants in the rural areas, and tentatively confirmed that “ Nine two ○ ”There is to promote the astragalus, red duckling to accelerate the growth and reproduction effect. First, “nine two ” effect on the milk vetch