• 中文核心期刊
  • CSCD来源期刊
  • 中国科技核心期刊
  • CA、CABI、ZR收录期刊

限根栽培对设施油桃植株特性的影响

Effect of Restricted Rooting on Greenhouse Cultivation of Nectarine

  • 摘要: 为研究限根栽培对设施油桃植株特性的影响,以离核甜、中油13号2个油桃品种为试验材料,设置3种限根栽培处理(环形限根、两侧限根、容器限根),以正常生长(不限根栽培)为对照(CK)。结果表明:3种限根方法对油桃的株高、冠幅均有限制作用,叶片可溶性固形物、叶绿素含量、叶片气孔导度均比CK增加。3种处理的新枝抽发数量、成枝率、坐果率相较CK均有所下降;两侧限根、环形限根能增加每枝条花朵数量,而容器限根则显著降低叶长、叶厚、叶面积。综合各项指标,两侧限根较适宜设施油桃限根栽培,对2个油桃品种的株高、冠幅限制作用明显,促进花芽分化,坐果率与CK差异不显著,果实数量较CK增加,其叶片的长度、宽度、厚度、叶面积均接近于CK。

     

    Abstract: Effect of cultivation of nectarine with restricted rooting in greenhouse on the plant characteristics was studied. Three treatments on root growth, i.e., circular root-restriction (TA), bilateral root-restriction (TB), and container root-restriction (TC) along with a cultivation without restriction (CK), were imposed on the plants of two cultivars, Freestone Sweet and Zhongyou 13.The results showed that the restricted rooting treatments had a limiting effect on the plant height or crown width. However, they resulted in higher soluble solids and chlorophyll contents and a greater leaf stomatal conductance of the plants than those of CK. The number of new shoots, percent branch formation, and fruit setting rate of the treated plants were lower than those of CK. Compared with CK, TA and TB produced more flowers per branch, while TC significantly reduced the length, thickness and area of the leaves. In all, TB significantly restricted the extension on the plant height and crown width of the two cultivars but maintained similar measurements on the length, width, thickness and area of leaves to those of CK.It enhanced the flower bud differentiation, while exerted no significant effect on the fruit setting rate, yet increased the number of fruits as compared to CK.Thus, the bilateral root-restriction appeared to be an appropriate maneuver on rooting to improve nectarine plant growth in a greenhouse.

     

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