在杂交稻冬春季制种过程中,抓好如下措施,可以夺取高产。抓好播种前的两个基础1.适当安排播种期。当地晚造常在7月上旬播种,杂交种子必须在6月下旬供应。根据几年试验,在雷州半岛,汕优6号、汕优63的父本宜在12月中、下旬播种,汕比64、威优64的父本宜在1月中、下旬播种。 In hybrid rice winter and spring seed production process, do a good job in the following measures, you can seize high yield. Do a good job before sowing the two basics 1. Appropriate arrangements for the sowing period. Local late often sown in early July, hybrid seeds must be supplied in late June. According to several years’ experiment, the male parents of Shanyou 6 and Shanyou 63 should sow in middle and late December in Leizhou Peninsula, and the male parents of Shanyi 64 and Weiyou 64 should sow in middle and late January.