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嘉兴地区种植晚粳稻的历史悠久,广大劳动农民在长期生产实践中积果了极其丰富的栽培经验。系统地总结这些经验,加以科学的分析,对指导当前大面积生产,促进低、中产变高产,高产更高产都具有实践意义。本文仅就初步掌握的资料,加以分析探讨,意在抛砖引玉,仅供深入开展晚粳稻高产规律研究和生产技术指导的参考。丰产晚粳稻在生育上主要特点 1.生育期和相应的农谚:单季晚粳稻在嘉兴地区栽培的全生育期在170天左右,本田生育期140天左右。一般在立夏至小满播种,芒种至夏至移栽,霜降到立冬收获。从5月上、中旬至6月中旬前后的35天左右为秧田生长期,6月中、下旬至8月初的50天左右为本田营养生长期,8月初到10月底的90天左右为生殖生长期。立秋前后为晚粳稻一生由营养生长转入生殖生长的转折点。其中6月中、下旬为活稞复青期,时间约10天;7月上、中旬为分蘖盛期,约20天左右;7月下旬至立秋为分蘖末期和长粗拔节期,约15～20天;8月中旬为幼穗分化期;8月下旬为成穗
Jiaxing has a long history of planting late japonica rice. The majority of laborers accumulate extremely rich cultivation experience in long-term production practice. Systematically summarizing these experiences and scientifically analyzing them is of practical significance in guiding the current large-scale production, promoting the transformation of low and medium-sized products into high-yielding and high-yielding products. This article only on the preliminary grasp of the information to be analyzed and discussed, intended to initiate, only to carry out the late rice yield law and production technology guidance reference. Fertility late japonica rice in the main features of fertility 1. Growth period and the corresponding farming proverbs: Single season late Japonica rice cultivation in Jiaxing region of the whole growth period of about 170 days, Honda growth period of about 140 days. Generally in the beginning of summer to sow sowing, the species to the summer solstice transplanting, frost down to wintry harvest. About 35 days from May to mid-June to mid-June is seedling growth period, about 50 days from mid-June to early August is HNR vegetative growth period, and about 90 days from early August to the end of October is reproductive growth period. Before and after the establishment of autumn late japonica rice growth from the vegetative growth into reproductive growth turning point. Among them, the middle and late June are the live rejuvenation and the rearing period is about 10 days; the mid and late July are the tillering stage, about 20 days; the late-July and the late autumn are the late tillering stage and the long- 20 days; mid-August for young panicle differentiation; late August for the ear