Ảnh hưởng của mức phân bón và mật độ trồng đến năng suất và chất lượng củ sâm bố chính (abelmoschus sagittifolius (kurz), merr.)

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Tác giả: Thị Thúy Nguyễn, Xuân Nam Nguyên, Thị Thiêm Trần

Ngôn ngữ: Vie

Ký hiệu phân loại: 631 Specific techniques; apparatus, equipment, materials

Thông tin xuất bản: Nông nghiệp và phát triển nông thôn, 2021

Mô tả vật lý: 42-50

Bộ sưu tập: Metadata

ID: 413107

Thêm vào giỏ Liên kết toàn văn

Nghiên cứu được tiến hành nhằm đánh giá ảnh hưởng của mật độ trồng và mức phân bón đến sinh trưởng và năng suất củ sâm Bố Chính trồng tại huyện Buôn Đôn, tỉnh Đắk Lắk. Thí nghiệm được hến hành trên đồng ruộng, bố trí theo kiểu chia ô lớn, ô nhỏ (split - plot) với 3 lần nhắc lại. Nhân tố ô chính là mức phân bón với 4 mức (cho 1 ha) 120 kg N + 60 kg P2O5+ 45 kg K,0 (Pl)
160 kg N + 80 kg P2O5 + 60kg K2O (P2)
200kg N + 100kg P2O5+ 75 kg K2O (P3)
240 kg N + 120 kg P2O5 + 90 kg K,0 (P4) trên nền 20 tấn phân bò khô hoai mục/ha. Nhân tố phụ là mật độ trồng với 4 mức Khoảng cách 40cm X 30cm, mật độ 83.333 cây/haMl)
khoảng cách 35cm X 30cm, mật độ 95.238 cây/ha (M2)
khoảng cách 30cm X 30 cm, mật độ 111.111 cây/ha (M3)
khoảng cách 25cm X 30cm, mật độ 133.333 cày/ha (M4). Kết quả nghiên cứu cho thấy khi đồng thời tăng mức phân bón từ P1 đến P3 và tăng mật độ trồng MI đến M4 thi chiều cao cây, đường kính tán, chỉ số diện tích lá, khối lượng chất khô, các yếu tố cấu thành năng suất và năng suất củ sâm Bố Chính cũng tăng lên. Tuy nhiên, khi tăng mức phân bón từ P3 lên P4 thi chiều cao cây, chỉ số diện tích lá cũng tăng nhưng sai khác không có ý nghĩa ở độ tin cậy 95%. Khi trong ở mật độ M3 kết hợp với mức phân bón P3 cho năng suất thực thu cao nhất (11,27 tấn tươi/ha) và hàm lượng chất chiết trong dược liệu đạt 25,4%. , Tóm tắt tiếng anh, The present study was conducted to evaluate the effects of planting density and fertilizer levels on the growth and tuber yield of Bo Chinh ginseng (Abelmoschus sagittifolius (Kurz), Merr grown in Buon Don district, Dak Lak province. The experiments were conducted on the field and arranged in a split - plot style with 3 replicates. The main plot factor was the fertilizer level with 4 levels 120 kg N + 60 kg P2O5 +45 kg K2O (Pl)
160 kgN + 80 kg P2O5 + 60 kg K2O (P2)
200kg N + 100 kg P2O5 + 75 kg K2O (P3)
240 kg N + 120 kg P2O5 + 90 kg K2O (P4). Decomposed cow manure fertilizer (20 tons/ha) was supplimented to all experiments. The secondary factor was planting density with 4 levels 40 cm X 30 cm, density 83,333 plants/ha (Ml)
35 cm X 30 cm distance, density 95,238 trees/ha (M2)
30 cm X 30 cm distance, density 111,111 plants/ha (M3)
25 cm X 30 cm distance, density 133,333 plants/ha (M4). The research results showed that simultaneously increasing the fertilizer level from Pl to P3 and increasing the planting density of Ml to M4 increased plant height, dry matter mass index, yield constituent factors and Bo Chinh ginseng tuber yield. However, when fertilizer level increased from P3 to P4, plant height increased, leaf area index increased but the difference was not significant in the 95% confidence level. When planted at M3 density combined with P3 fertilizer gave the highest net yield (11.27 tons of fresh / ha) and extract content in medicinal herbs reached 25,4%.

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