%0 Journal Article
%T Coupling effects of water and chemical fertilizers on Hevea brasiliensis latex yield.<br>水肥耦合对橡胶树产胶量的影响
%A HUA Yuan-gang
%A CHEN Qiu-bo
%A LIN Zhao-mu
%A LUO Wei
%A <br>华元刚
%A 陈秋波
%A 林钊沐
%A 罗微
%J 应用生态学报
%D 2008
%I 
%X Water and nutrient are the two main factors limiting Hevea brasiliensis growth and its latex yield. With 17 year-old Clone SCATC 7-33-97 H. brasiliensis as test material, the coupling effects of water and chemical N, P and K fertilizers on latex yield were studied by general orthogonal rotation design of quadratic regression with four factors and five levels under field condition, and a regressive mathematical model was set up based on the latex yield by quadratic regression analysis. The results showed that all test coupling levels of water and chemical fertilizers had significant effects on the latex yield. The yield-increasing effect of test factors was in the order of N application rate > irrigation amount > P application rate > K application rate, while the coupling effect of water and chemical fertilizers was in the sequence of water and N > N and P > water and P > water and K. There was a negative coupling effect of K application rate and soil moisture content. For latex yield, the optimum application rates of chemical fertilizers were 476.39 kg x hm(-2) of urea, 187.70 kg x hm(-2) of superphosphate and 225.77 kg x hm(-2) of potassium chloride, and the optimum irrigation amount was to have 82.78% soil relative water content.
%K 橡胶树
%K 水肥耦合
%K 产胶量
%K 水肥耦合
%K 橡胶树
%K 影响
%K yield
%K latex
%K chemical
%K fertilizers
%K water
%K effects
%K 含水量控制
%K 土壤水分
%K 钾用量
%K 氯化
%K 过磷酸钙
%K 尿素
%K 组合
%K 最佳
%K 水肥调控
%K 交互效应
%K 耦合效应
%K 结果
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=EC72E4776B44A794B6294005D620AD1B&yid=67289AFF6305E306&vid=2A8D03AD8076A2E3&iid=B31275AF3241DB2D&sid=C4B40BDE3E33484C&eid=DB29DCDE63A11F6A&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=0&reference_num=23