近几年,在我区种植的新陆早一号棉花,出现不少“空棵棉”具体情况表现于下:一、植株高大,节间长,生长旺盛,开花不少,脱落严重,结桃不多。二、棉株长势很好,光开花,不结桃,到下霜时,还是青枝绿叶。三、植株矮,全身油浸状,叶片发红,桃多,桃小,种仁不饱满或无种仁,这种棉株由原来的千分之几,增加到百分之几。上述情况对产量影响很大,其原因及应怎样预防,特请贵刊协助解答。 In recent years, in our district planted Xinluosao No.1 cotton, many “empty cotton trees” appear in the following concrete conditions: First, tall plants, long internodes, strong growth, a lot of flowers, shedding serious, knot Not many peaches. Second, the cotton plant grows well, light flowering, not peach, to frost, or green branches. Third, the plant is short, whole body oil-like, red leaves, peach more, small peach, seed is not full or seedless, this cotton from the original a few thousandths, increased to a few percent. The above situation has a great impact on the yield, the reason why and how to prevent, especially your magazine to help answer.