摘要
对东魁杨梅树体的解体调查结果表明：杨梅未结果幼年树（１８ 株／６６６ ．７ ｍ２） 年间养分吸收量为 Ｎ２ ．６２ ｋｇ ， Ｐ２ Ｏ５ ０ ．３７ ｋｇ ， Ｋ２ Ｏ２ ．４２ ｋｇ ， Ｃａ Ｏ１ ．２９ ｋｇ ， Ｍｇ Ｏ０ ．４４ ｋｇ ；吸收比例为１００∶１４∶９２∶４９∶１７ 。结果成年树（１８ 株／６６６ ．７ ｍ２ ，产量１ ３５０ ｋｇ） 年间养分吸收量，依次为９ ．４ ｋｇ ，０ ．９ ｋｇ ，１０ ．６ ｋｇ ，４ ．７ ｋｇ ，１ ．５ ｋｇ ，吸收比例为１００∶１０∶１１３∶４７∶１６ 。年间施肥量，未结果幼年树 Ｎ３ ．５ ｋｇ ， Ｐ２ Ｏ５ ０ ．９ ｋｇ ， Ｋ２ Ｏ３０ｋｇ ，施肥比例为１００∶２５∶８６ ；结果成年树 Ｎ９ ．２ ～１０ ．６ ｋｇ ， Ｐ２ Ｏ５ ２ ．３ ｋｇ ， Ｋ２ Ｏ１２ ．３ ｋｇ ；施肥比例为１００∶２１～２５∶１１６ ～１２５ 。幼年树和成年树 Ｐ 吸收量分别为０ ．３７ ｋｇ 和０ ．９ ｋｇ ，占全量的２ ．７ ％ 和２３ ％ ，其吸收量和吸收比例均较低；果实养分吸收量与其它果树相比，相对较低，尤其是 Ｐ２ Ｏ５ 和 Ｃａ Ｏ 的吸收仅为温州蜜柑类的１／８ ，认为杨梅树体 Ｐ、果实 Ｐ 和 Ｃａ 吸收量低是杨梅营养生理的特性之一。
Presumed amount of absorbed nitrogen,phosphorus,potassium,calcium and magnesium in 18 non bearing trees,which planted in 666.7 m 2,were 2.62 kg,0.37 kg(as P 2O 5),and 2.42 kg (as K 2O) respectively,and their absorbing proportion were 100∶14∶92;those in 18 bearing trees,which produced 1 350 kg and were planted in 666.7 m 2,were 9.4 kg,0.9 kg(as P 2O 5),and 10.6 kg (as K 2O) respectively,and their absorbing proportion were 100∶10∶113.Calculating fertilizer application per 666.7 m 2 from the results of nutrient absorption,the application of nitrogen,phosphorus and potassium should be 3.5 kg,0.9 kg,and 3.0 kg respectively in non bearing trees;9.2～10.6 kg,2.3 kg,and 12.3 kg respectively in bearing trees,their fertilizing proportion should be 100∶25∶86∶and 100∶21～25∶116～125 respectively.The amount of absorbed phosphorus in non bearing and bearing tree were only 0.37 kg and 0.9 kg respectively,and their elements amounted to 2.7% and 2.3% of all absorption respectively.The nutrient absorption in fruits were lower than other fruits,especially,the amount of phosphorus and calcium in fruits were only one eighth of Satsuma mandarin.It is one of the nutrient physiology characteristic in Chinese bayberry that the amount of absorbed phosphorus in whole tree,and phosphorus,calcium in fruit are rather lower.
出处
《浙江农业学报》
CSCD
1999年第4期208-211,共4页
Acta Agriculturae Zhejiangensis
基金
浙江省人事厅资助
关键词
杨梅
矿质养分
吸收
施肥
Chinese bayberry ( Myrica rubra )
mineral nutrient
absorption
fertilizing
