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白莲属于睡莲科,是多年生水生草本植物。广昌县栽培通心白莲,距今有1300多年的悠久历史,具有色白,粒大、芳香、营养丰富、药用价值高等特点,故广昌素有“莲乡”之称。近年来全县种植面积4.0万余亩,单产45公斤左右,最高亩产达100公斤。但由于受气候条件的影响,产量不稳定。本文着重分析降水对白莲产量的影响以及影响产量的关键时期,并就如何趋利避害,提高白莲单产提出建议。 一、降水是影响白莲生长发育的重要因素 我县在白莲生长发育期间的4～9月活动积温为4535℃,结莲和收莲盛期的7～8月平均气温为26～28℃,日较差达9～10℃,由莲叶和莲蓬制造和吸收的养料绝大部分都输向果实和种子,有
White lotus is a Nymphaeaceae, is a perennial aquatic herb. Guangchang County, cultivation of heart-shaped white lotus, dating back more than 1300 years of history, with color white, large grain, aromatic, nutritious, high medicinal value characteristics, so Guangchang known as “lotus,” said. In recent years, the county has planted an area of more than 40,000 mu with a yield of about 45 kilograms and a maximum of 100 kilograms per mu. However, due to the climatic conditions, the output is not stable. This paper focuses on the analysis of the impact of precipitation on the yield of white lotus and the key period affecting the yield, and on how to profit avoidance and improve the yield of white lotus proposal. First, precipitation is an important factor affecting the growth and development of Bailian County in the Bailian during the growth and development during the September to September activity accumulated temperature is 4535 ℃, July and August of the lotus and harvest Sheng average temperature of 26 ~ 28 ℃, day Poor up to 9 ~ 10 ℃, by lotus leaf and lotus leaf manufacturing and absorption of most of the nutrients are lost to the fruit and seeds, there