利用蔬菜杂交一代优势,增加单位面积产量,提早成熟,效果显著,目前在世界各国均已广泛应用,如保加利亚现在蔬菜生产上已几乎全部采用了杂交一代种子。蔬菜的杂种优势一般最显著的是产量高,形状整齐,成熟期一致(或提早)生长势旺有些并能表现抗病。根据以上情况,我所三年来在番茄、黄瓜、甘篮、白菜等四种主要蔬菜上作了一些初步的研究和探讨,现将试验方法及结果简述于后,以资参考。 The use of hybrid generation of vegetables to increase the yield per unit area, early maturity, the effect is remarkable, has been widely used in various countries in the world, such as Bulgaria now almost all the vegetables used in the production of hybrid seed. Heterosis of vegetables in general the most significant is the high yield, shape and tidy, consistent with the mature (or earlier) prosperous growth and some can show disease resistance. Based on the above, I made some preliminary research and discussion on the four main vegetables of tomato, cucumber, sweet basket, cabbage and so on in the past three years. Now, the test methods and results are briefly described below for reference.