【摘要】 以杨梅Myricarubra为试材,研究了日光大棚温度和湿度变化,及其对丁岙梅开花、果实发育和促成果实提早成熟的影响。结果表明,1～5月中午前后棚内平均气温可达20 8～33 3℃,比棚外高11 4℃。寒流期间棚内气温比棚外高4 8～7 0℃,当棚外气温下降到-3 0℃时,棚内仍可保持在1 0℃。棚内20cm深处地温稳定在12 0～14 0℃,比棚外高5 0～6 0℃。棚内空气湿度多在85%以上,比棚外高4%～5%。棚内适宜的温、湿度促成杨梅提早15d和19d萌芽和开花,果实生长发育期也相应提前,成熟期则提早14d。大棚覆膜时间以12月底为宜,提前覆膜对更早成熟无相应效应。棚内单产8 865t·hm-2,比棚外增长19 62%,经济效益提高4 2～5 7倍。还对有计划建立杨梅大棚栽培进行了讨论。图2表3参10更多还原

【Abstract】 Myrica rubra is used as a test material to study the temperature and monisture change of sunlight shed and its effects on the blossom,fruit development and earlier maturity of cv.Ding’ao.The result showed that the average temperature inside the shed at noon during January and May was 20.8-33.3 ℃,which was 11.4 ℃ higher than that outside.During cold current period,the temperature inside the shed was 4.8-7.0 ℃ higher than that outside.When the temperature outside the shed was reduced to -3.0 ℃,the inside temperature was 1.0 ℃.The soil temperature under the depth of 20 cm inside the shed was 12.0-14.0 ℃,which was 5-6.0 ℃ higher than outside temperature;the air moisture inside the shed was over 85%,which was 4%-5% higher than that outside.Optimum temperature and moisture inside the shed caused the earlier bud and blossom by 15-19 days.Fruits developed 2 weeks earlier than usual.The film of shed should be covered at the end of December.Earlier film covering had no effect on earlier maturity.The unit yield inside the shed was 8.9 t·hm^-2,19.62% higher than that outside.The economic benefit was 4.2-5.7 times higher than usual.The establishment of M.*"rubra shed is discussed更多还原