superior leaf

Application of panicle fertilization at the2nd leaf-age from top increased the grain filling rate at late grain filling stage and shortened the time of superior grain filling.

倒2叶期施肥在一定程度上增强了籽粒灌浆后期的灌浆速率，缩短了强势粒的灌浆时间。

The ratios of upper tobacco leaves raised according to the altitude. The best level was 300-500 m altitudes for superior leaf ratio, output value and average price. 6.

上部烟比例随着海拔的升高而升高，上等烟比例、产值、均价都以300-500m水平最优。

In addition, using the six self-incompatible lines as indicated above and Black Leaf self-incompatible line introduced from Shanghai Vegetable Research Institute, more than 160 combinations have been made, and one early and two mid-early superior combinations were selected among them.

利用上述培育的甘兰自交不亲和系及引自上海园艺研究所的黑叶小平头自交不亲和系的材料，进行了160多个组合搭配，从中选育出一个早熟、二个中早熟优良组合。