THỰC TRẠNG BỆNH VÀNG LÁ THỐI RỄ TRÊN CÂY CAM SÀNH TẠI HUYỆN HÀM YÊN, TỈNH TUYÊN QUANG

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Duy Trường Hà, Quỳnh Anh Nguyễn

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học và Công nghệ - Đại học Thái Nguyên, 2023

Mô tả vật lý: tr.334-341

Bộ sưu tập: Metadata

ID: 339687

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Mục đích của nghiên cứu nhằm đánh giá thực trạng bệnh vàng lá thối rễ trên cây cam sành, xác định được các nguyên nhân gây nên bệnh vàng lá thối rễ và đề xuất giải pháp khắc phục nhằm tăng hiệu quả cho cây cam sành tại huyện Hàm Yên, tỉnh Tuyên Quang. Nguyên nhân gây bệnh vàng lá thối rễ trên cây cam sành được xác định thông qua việc phân tích dữ liệu về thực trạng canh tác, điều kiện sản xuất được thu thập trực tiếp từ người dân và từ các mẫu đất thu thập được tại các xã điều tra thuộc huyện Hàm Yên . Kết quả điều tra cho thấy, phần lớn các hộ trồng cam lấy cây giống từ các nơi không có nguồn gốc rõ ràng (82%), việc sử dụng phân bón hữu cơ cho cây cam sành ở tại địa phương vẫn chưa được người dân chú trọng sử dụng, có đến 61,67% số hộ không sử dụng phân bón hữu cơ hoặc phân chuồng hoai mục, 38,33% số hộ còn lại có sử dụng nhưng lượng phân bón hữu cơ cho cây khá thấp, lượng phân bón vô cơ chưa tuân thủ theo quy trình kỹ thuật sản xuất cây cam sành. Kết quả phân tích mẫu đất sản xuất cam tại Hàm Yên đang có độ pH dao động từ 3,81 đến 5,54, EC từ 0,41 đến 0,88 mS/cm là đất chua hoặc rất chua, nên cần có các biện pháp cải tạo đất, giúp cây trồng có thể hấp thu dinh dưỡng tốt hơn. Kết quả phân tích cho thấy, số lượng bào tử nấm trong các mẫu đất dao động từ 408 – 595 bào tử/100g đất và đã xác định đặc điểm của một số loài tuyến trùng: T.semipenetrans, H.cavenessi, C.magnifica.The purpose of this study was to evaluate the status of yellow leaf root rot on Sanh orange, identify the caused of yellow leaf root rot and propose solutions to increase the effectiveness of Sanh orange in Ham Yen district, Tuyen Quang province. We collected the information from farmers about the current farming situation, production conditions and taked the soil samples from the survey sites to analyze and determine the cause of yellow leaf root rot disease in Ham Yen district, Tuyen Quang. The survey results show that the majority of orange-growing households get seedlings from places with no clear origin (82%), the use of organic fertilizer for orange trees in the locality has not been noticed by the people. In terms of use, up to 61.67% of households do not use organic fertilizers or decaying manure, the remaining 38.33% of households use but the amount of organic fertilizer for plants is quite low, the amount of fertilizer Inorganic plants have not yet complied with the technical process of producing earthen orange trees. The results of analysis of soil samples for orange production in Ham Yen, which have pH ranging from 3.81 to 5.54, EC from 0.41 to 0.88 mS/cm are acidic or very acidic soil. Measures to improve soil, help plants can better absorb nutrients. The analysis results showed that the number of fungal spores in the soil samples ranged from 408 to 595 spores/100g of soil and the characteristics of some nematode species were identified specifically: T.semipenetrans, H. .cavenessi, C.magnifica.

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