“7804”红麻是中国农科院麻类研究所培育的一个高产、抗病良种。经多年实践,我们摸索出了打顶束株,能提高种子产量的技术措施。 打顶心一可降低蒴果离地高度(一般降低20～50厘米);二可增加分枝数(一般增加2～5个分枝);三可增加茎粗,打顶后的茎粗一般在1.6～1.8厘米,比不打顶增粗0.2～0.3厘米;四可增加果穗长度和蒴果数(果穗长度可增加10～15厘米,总蒴果数增加30～45％);五是显著提高单位 “7804” kenaf is a high-yield and disease-resistant variety cultivated by China Academy of Agricultural Sciences Institute of Hemp. After many years of practice, we explored the top-beam strain, can improve the technical yield of seeds. Top of a heart can reduce the height of the capsule from the ground (generally reduce 20 to 50 cm); two can increase the number of branches (usually increased 2 to 5 branches); three can increase the stem diameter, 1.6 to 1.8 cm thicker than the do not thicken 0.2 to 0.3 cm; four can increase the length of the ear and the number of capsules (ear length can increase 10 to 15 cm, the total number of capsules increased by 30 to 45%); five significant increase unit