摘要
研究了胡萝卜肉质根产量７３１４９．７ｋｇ／ｈｍ２条件下其鲜重、干重变化及Ｎ，Ｐ２Ｏ５，Ｋ２Ｏ，Ｓ的吸收规律。结果表明：植株鲜重、干重增长高峰期在苗龄４６～６０ｄ（其中肉质根在４６～１０５ｄ，叶在３１～６０ｄ）；每生产１０００ｋｇ肉质根植株需吸收Ｎ１．３８ｋｇ，Ｐ２Ｏ５１．３７ｋｇ，Ｋ２Ｏ２．２３ｋｇ，Ｓ０．１７ｋｇ，其比例为１．００∶０．９９∶１．６２∶０．１２；植株吸收的Ｎ，Ｐ２Ｏ５，Ｋ２Ｏ主要贮存在肉质根内，Ｓ主要贮存在叶内；植株对４种养分吸收强度最大的时期均在苗龄４６～６０ｄ。
? The growth trend of fresh weight and dry weight of carrots and the uptaking rule of N,P,K and S under the succulent taproot yield of 73 149.7 kg/hm2 conditions were studied in the paper.The results showed as follows: the growth of the plant fresh weight and dry weight reached its peak in seeding age of 46～60 days (the succulent taproot in seedling age of 46～105 days and leaves in seedling age of 31～60 days);on the average for producing 1 000 kg succulent taproot,1.38 kg N,1.37 kg P2O5,2.23 kg K2O and 0.17 kg S at the ratio of 1.00∶0.99∶1.62∶0.12 were uptaken,N,P and K were mainly stored in taproots and S in leaves; the peak of uptaking stage of the four nutrient elements was at the seedling age of 46～60 days.
关键词
胡萝卜
鲜重
干重
需肥规律
Carrot
fresh weight
dry weight
nutrients uptaking rule
