论文部分内容阅读
在大棚秋延后番茄的生育后期,温度逐渐降低,甚至会遇到低温,造成转色困难,这就要求番茄能早熟、高产。摘顶是在番茄主茎上已经长出了预期的花穗之后,为了使主茎不再伸长,使养分更集中地转运到果实中去,而把主茎上嫩梢摘掉的措施。摘心之后提供了根重与茎叶重的比值,使植株在形态、结构、功能三者之间达到了合理协调,井产生一系列有利于增产的生理变化,所以能达到秋延后番茄早熟、高产的目的。单干整枝的征最上一层花穗上保留2张叶片,将上面的嫩梢打掉。这2张叶,叫保护叶,又叫营养叶,它具有制造养分,使果实更快地膨大起来的作用。对于侧芽,一般不从根部打掉,而是留1～2片叶摘顶。这样做以后,既控制了侧枝的生长,又使得侧枝能制造一些养分,加速主枝的生长。一干半整枝的摘顶留主干方法同单干整枝,此外,在第1穗果下方的一条侧枝(强侧枝)留1穗果后再留2片叶摘顶,而将其他侧枝全部去掉。单干换头整枝的主干摘顶是在第3花穗出现后进行,留2片真叶摘顶,待第1穗果坐住后,在第2穗果下留一个
In the late autumn after the greenhouses tomato growth later, the temperature gradually reduced, or even encounter low temperatures, resulting in difficult color conversion, which requires tomatoes can be early, high yield. The top pick is a measure of removing the shoot tips from the main stem after the desired spikes have been grown on the main stem of the tomato, in order to make the main stem no longer elongate, allowing the nutrients to be transported more concentratedly into the fruit. After the topping, the ratio of root weight to shoot weight was provided, so that the plants could reach a reasonable coordination among the morphology, structure and function, and a series of physiological changes conducive to yield increase could be achieved. Therefore, The purpose of high yield. Solitary pruning levy on the top layer of flower retained two leaves, the above shoots destroyed. These two leaves, called the protective leaves, also known as vegetative leaves, have the effect of making nutrients so that the fruit expands more rapidly. For the lateral buds, generally not destroyed from the root, but leave 1 to 2 leaves pick top. After doing so, it not only controls the growth of the collateral branches, but also enables the collateral branches to make some nutrients and accelerate the growth of the main branches. One and a half full branch pruning trunk stay the same method with the main branch, in addition, in a branch under the first branch of a branch (strong side branches) to leave a fruit and then leave two leaves topping, and all other branches removed. Single stem replacement pruning of the trunk of the top pick is after the emergence of the third spike, leaving two true leaves pick the top to sit after the first fruit, leave a second in the next