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“九二○”又叫赤霉素,是一种高效植物生长激素。现已广泛应用于粮食、柑桔、蔬菜等作物的栽培上,特别是应用于杂交水稻的繁殖制种上,表现出良好的增产作用。为了正确地使用“九二○”,有必要对它的来龙去脉和性质有所了解。 来源“九二○”是从赤霉菌的代谢产物中分离出来的。赤霉菌是一种能使作物受害的病原菌,它的主要寄主是禾本科作物,能引起水稻上恶苗病、小麦的赤霉病等。所以,我们平时使用的赤霉素晶品、赤霉素粗品、赤霉素液体产品是绝对不允许有赤霉菌的活菌体存在的。能产生“九二○”这种生长激素的微生物除赤霉菌外,还有串珠镰刀菌、尖孢镰刀菌、毛壳菌等,都能产生
“920” also known as gibberellin, is a highly efficient plant growth hormone. Has been widely used in the cultivation of crops such as grain, oranges, vegetables, especially applied to the breeding of hybrid rice seed production, showed a good yield. In order to correctly use the “920”, it is necessary to understand its history and nature. Source “920” is isolated from the metabolites of Gibberella. Gibberella is a pathogen that can cause crop damage. Its main host is gramineous crops, which can cause ill effects on rice and wheat scab. Therefore, we usually use the gibberellin crystals, gibberellin crude, gibberellin liquid products is absolutely not allowed to have the existence of fungi Gibberella. Can produce “920” growth hormone microorganisms in addition to Gibberella, as well as Fusarium, Fusarium oxysporum, Chaetomium, etc., can produce