近几年来,上海郊区不少社队在水稻上应用“九二○”,取得了一定的增产效果。现将“九二○”在后季稻上的作用介绍如下: (一)促进早抽穗。后季稻孕穗、破口期喷施10～20单位的“九二○”(或混和30～40单位的“七○二”),一般都可提早抽穗2～3天。“九二○”具有拉长植物细胞的生理 In recent years, many communes and sub-communes in Shanghai’s suburb have applied “920” to rice and have achieved some stimulation effects. The current role of “920” on the following season rice is as follows: (1) To promote early heading. After the late rice booting, breaching period spraying 10 to 20 units of “920” (or a mixture of 30 to 40 units of “7092”), generally early heading 2 to 3 days. “Nine two ○” with elongated plant cells physiology