Nghiên cứu tác động các yếu tố dinh dưỡng đất tới sự phân bố của cây Bò khai (Erythropalum scandens Blume) tại huyện Võ Nhai, tỉnh Thái Nguyên=The influence of soil nutrition on the distribution of the Erythropalum scandens Blume in Vo Nhai district, Thai Nguyen province

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Tác giả: Chí Hiểu Nguyễn, Tiến Dũng Nguyễn

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Khoa học và Công nghệ Lâm nghiệp, 2024

Mô tả vật lý: tr.39-47

Bộ sưu tập: Báo, Tạp chí

ID: 253114

Thêm vào giỏ

Bo Khai vegetable plant's scientific name is Erythropalum scandens Blume. In traditional medicine, Bo Khai is considered a vegetable that has both food and medicinal effects. The Bo Khai vegetable plant was "domesticated" to become a local agricultural product and propagated in many localities across the country, including Thai Nguyen province. However, Bo Khai vegetable plants appearing in nature are on a downward trend, possibly due to many changes in the natural environment, narrowed distribution areas or overexploitation. To develop Bo Khai planting areas, the study evaluated the correlation between soil nutrients and distribution of Bo khai in Than Sa-Phuong Hoang nature protection area by standard plots and the PCA principal axis method using PRIMER 5 programe. Research results showed that the Bo Khai vegetable plant has the highest correlation with the percentage of Ca (%) in the soil, followed by nitrogen, humus, phosphorus, potassium and pHKCl. Meanwhile, in nature, the appearance of Bo Khai tree in Vo Nhai district, Thai Nguyen province is usually in high places, the soil has a high proportion of rocks mixed in, the canopy cover is quite good, and rarely appears in the states. rich forest. This is consistent with the results that the appearance of Bo Khai vegetable correlates very closely but inversely with a number of factors such as forest status, soil color and the ratio of tree roots in the soil.Cây Bò khai có tên khoa học là Erythropalum scandens Blume. Trong dân gian cây Bò khai được coi là loại rau vừa có tác dụng làm thực phẩm, vừa có tác dụng làm thuốc chữa bệnh. Cây Bò khai được “thuần hóa” trở thành cây hàng hóa và được nhân giống tại nhiều địa phương trên cả nước trong đó có tỉnh Thái Nguyên. Tuy nhiên cây Bò khai xuất hiện trong tự nhiên đang có xu hướng giảm dần, nguyên nhân có thể do môi trường tự nhiên thay đổi đã làm thu hẹp vùng phân bố hoặc do tình trạng khai thác quá mức của con người. Để phát triển vùng trồng cây Bò khai, nghiên cứu đã tiến hành đánh giá mối tương quan giữa yếu tố dinh dưỡng đất và sự phân bố của cây Bò khai tại khu vực Khu bảo tồn thiên nhiên (KBTTN) Thần Sa - Phượng Hoàng, huyện Võ Nhai, tỉnh Thái Nguyên. Nghiên cứu sử dụng phương pháp phân tích mẫu đất tại các ô tiêu chuẩn và phương pháp phân tích thành phần chính (PCA) bằng phần mềm thống kê PRIMER5. Kết quả nghiên cứu chỉ ra cây Bò khai có mức độ tương quan cao nhất với tỷ lệ phần trăm Ca (%) trong đất, tiếp đến là nitơ, mùn, lân, kali tổng số và pHKCl. Trong khi đó, ở ngoài tự nhiên sự xuất hiện của cây Bò khai tại huyện Võ Nhai, tỉnh Thái Nguyên thường ở những vị trí trên cao, đất có tỉ lệ đá lẫn nhiều, độ tàn che khá, ít xuất hiện ở những trạng thái rừng giàu. Điều này phù hợp với sự xuất hiện của cây Bò khai tương quan rất chặt nhưng ngược chiều với một số yếu tố như trạng thái rừng, màu sắc đất và tỷ lệ rễ cây trong đất.

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