Giúp xử lí đất trồng lộc vừng

#1
Em mới kiếm được 1 gốc lộc vừng về trồng trong quá trình lấy đất để trồng phát hiện thấy một số con như con nhộng màu trắng hỏi thì được biết là Sâu đất, em đã dùng tay bắt hết ra khỏi đất nhưng vẫn chưa yên tâm ko biết có cách nào diệt triệt để và mấy con Sâu đất này nó phá hoại lộc vừng ở mức độ nào nhờ mọi người tư vấn giúp em.
 

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#2
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Priority="67" SemiHidden="false" UnhideWhenUsed="false" Name="Medium Grid 1 Accent 6"/> <w:LsdException Locked="false" Priority="68" SemiHidden="false" UnhideWhenUsed="false" Name="Medium Grid 2 Accent 6"/> <w:LsdException Locked="false" Priority="69" SemiHidden="false" UnhideWhenUsed="false" Name="Medium Grid 3 Accent 6"/> <w:LsdException Locked="false" Priority="70" SemiHidden="false" UnhideWhenUsed="false" Name="Dark List Accent 6"/> <w:LsdException Locked="false" Priority="71" SemiHidden="false" UnhideWhenUsed="false" Name="Colorful Shading Accent 6"/> <w:LsdException Locked="false" Priority="72" SemiHidden="false" UnhideWhenUsed="false" Name="Colorful List Accent 6"/> <w:LsdException Locked="false" Priority="73" SemiHidden="false" UnhideWhenUsed="false" Name="Colorful Grid Accent 6"/> <w:LsdException Locked="false" Priority="19" SemiHidden="false" UnhideWhenUsed="false" QFormat="true" Name="Subtle Emphasis"/> <w:LsdException Locked="false" Priority="21" SemiHidden="false" UnhideWhenUsed="false" QFormat="true" Name="Intense Emphasis"/> <w:LsdException Locked="false" Priority="31" SemiHidden="false" UnhideWhenUsed="false" QFormat="true" Name="Subtle Reference"/> <w:LsdException Locked="false" Priority="32" SemiHidden="false" UnhideWhenUsed="false" QFormat="true" Name="Intense Reference"/> <w:LsdException Locked="false" Priority="33" SemiHidden="false" UnhideWhenUsed="false" QFormat="true" Name="Book Title"/> <w:LsdException Locked="false" Priority="37" Name="Bibliography"/> <w:LsdException Locked="false" Priority="39" QFormat="true" Name="TOC Heading"/> </w:LatentStyles> </xml><![endif]--><!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} </style> <![endif]--> Con sâu đất là ấu trùng của bọ hung..con bọ hung tìm đẻ trứng vào phân hữu cơ, trứng nở ra ấu trùng.. các con ấu trùng này chui trong đất lùng sục đồ ăn..trên đường đi nếu rễ cây làm chúng vướng…chúng cắn đứt rễ cây bằng 2 cái càng rất khỏe..nhất là cây trồng chậu…rễ đặc ngẹt..sẽ bị chúng cắn đứt hết
Do đó khi bón phân hữu cơ..vài ngày sau bạn nên rải hoặc tưới thuốc trừ sâu vào đất..để diệt ấu trùng bọ hung
Và cứ khoảng 3 tháng lại rải hoặc tưới thuốc diệt sâu 1 lần..để diệt không những sùng đất mà cả tuyến trùng nữa ( tuyến trùng làm sưng rễ cây èo uột rồi chết)



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