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近年来,我省及国内各地群众应用农药稻脚青(甲基胂酸锌)对水稻进行化学杀雄,取得一定成果,为水稻的杂种优势利用,创造了有利条件。为了解稻脚青对水稻的杀雄作用,进一步改进施药技术,寻求新的高效无毒的杀雄药剂提供理论根据,自1973年起我们开展稻脚青的杀雄原理研究,现将研究结果报导如下。试验材料及方法试验材料用水稻晚造品种“溪南矮”。分12个小区,每小区插120科。每期喷药2个小区,另2个小区为对照。幼穗分化后,分下列5个时期进行喷药一次:
In recent years, the people in our province and all over the country have applied pesticide rice foot green (zinc methylarsonate) to kill the rice chemically, and achieved certain achievements, creating favorable conditions for the utilization of heterosis in rice. In order to understand the role of O. japonica on the killing of rice, to further improve its application techniques and to find a new theoretical basis for its highly effective and non-toxic killing agents, we have conducted the research on killing principle of O. japonica since 1973. Now, The results are reported below. Test materials and methods Test materials used in late rice varieties “short creek.” Divided into 12 districts, each district to insert 120 families. Each spraying 2 cells, the other two cells as a control. After panicle differentiation, the following five periods were sprayed once: