北京房山区山地景观荞麦适宜播期研究

Study on Suitable Sowing Date of Buckwheat Used for Mountainous Landscape in Fangshan District of Beijing

为更好地发挥荞麦在房山区景观营造中的作用,开展了荞麦播期试验,研究播期对荞麦观赏期和株高的影响。结果表明,房山区荞麦春播适宜播期为4月5—16日,花期为70 d左右,初花至倒伏亦为70 d左右,封行至倒伏为60 d左右,盛花至倒伏可以持续60 d左右,观赏持续期最长;夏秋播适宜播期为7月20日至8月25日,植株不易发生倒伏,花期在34~57 d,其中7月20日左右播种最佳,花期达57 d;5月7日至6月9日也可播种,初花至倒伏在21~49 d;6月25日至7月5日不适合播种。

In order to better play the role of buckwheat in the landscape construction of Fangshan district,the sowing date experiment of buckwheat was carried out to study the effect of sowing date on the ornamental period and plant height of buckwheat.The results showed that the suitable sowing date for spring sowing of buckwheat in Fangshan District was April 5 to 16,and the blooming period was about 70 days,the duration from flowering to lodging were also about 70 days,the duration from closure to lodging were about 60 days,the duration from full flowering to lodging could last about 60 days,and the ornamental duration was the longest.The suitable sowing time for summer and autumn was from July 20 to August 25,the plant was not easy to fall,and the blooming period was 34 to 57 days,the best sowing time was about July 20 and the blooming period was 57 days.It could also be sown from May 7 to June 9,and the duration from flowering to lodging were 21 to 49 days.June 25 to July 5 was not suitable for sowing.