Ảnh hưởng của tưới nước trong mùa khô đến sản lượng lá cây Trichanthera gigantea

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Tác giả: Thị Hoan Trần, Trung Kiên Từ

Ngôn ngữ: Vie

Ký hiệu phân loại: 633 Field and plantation crops

Thông tin xuất bản: Khoa học và công nghệ Việt Nam , 2022

Mô tả vật lý: 43 - 47

Bộ sưu tập: Metadata

ID: 406338

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Thí nghiệm được thực hiện tại Trường Đại học Nông Lâm, Đại học Thái Nguyên từ năm 2019 đến 2020 nhằm xác định ảnh hưởng của tưới nước trong mùa khô đến sản lượng lá cây thức ăn xanh Trichanthera gigantea (chè đại). Thí nghiệm gồm 4 nghiệm thức (NT1, NT2, NT3, NT4) tương ứng với 4 mức tưới nước (0, 40, 80 và 120 m3/ha/lứa cắt) và được bố trí theo khối hoàn toàn ngẫu nhiên (mỗi NT được lặp lại 5 lần). Mật độ trồng, phân bón và các yếu tố khác giống nhau đối với cả 4 NT. Kết quả cho thấy, sản lượng vật chất khô (VCK) và protein thô lá của các NT có tưới nước đều cao hơn đối chứng (không tưới nước). Sản lượng VCK từ NT1 đến NT4 tương ứng là 2,410, 2,934, 3,292 và 3,594 tấn/ha/mùa khô, nếu quy ước sản lượng của NT1 là 100% thì của NT2, NT3 và NT4 tương ứng là 121,7, 136,6 và 149,1%. Sản lượng protein thô từ NT1 đến NT4 tăng tương ứng từ 0,618 (100%) lên 0,922 (149,2%) tấn/ha/mùa khô. Sản lượng VCK và protein thô của NT2, NT3 và NT4 sai khác rõ rệt so với NT1, còn NT4 sai khác rõ rệt so với NT2 và NT3. Kết quả nghiên cứu cho thấy, tưới nước trong mùa khô có ảnh hưởng rõ rệt đến sản lượng lá cây thức ăn xanh T. gigantea và nên tưới với mức 120 m3/ha/lứa cắt., Tóm tắt tiếng anh, The experiment was conducted at Thai Nguyen University of Agriculture and Forestry from 2019 to 2020 to determine the effect of irrigation on the leaf yield of Trichanthera gigantea green fodder in the dry season. The experiment consisted of 4 independent variables (NT1, NT2, NT3, NT4), corresponding to 4 different irrigation levels (0, 40, 80, and 120 m3/ha/harvest) and designed in a completely randomised block with 5 replicates. Plantation density, fertilizer application, and other factors were similar among the four variables. The results showed that the dry matter and crude protein yields of leaves of the irrigated experiments were higher than that of the control (without watering). The dry matter yields of leaves in NT1 to NT4 were 2.410, 2.934, 3.292, and 3.594 tons/ha/dry season, respectively. If the yield of NT1 was considered as 100% then that of NT2, NT3, and NT4 was 121.7, 136.6, and 149.1%, respectively. The protein yields of NT1 to NT4 grew up from 0.618 tons (100%) to 0.922 tons/ha/dry season (149.2%). Dry matter and crude protein yields of NT2, NT3, and NT4 were significantly different from NT1
that of NT4 was significantly different compared to that of NT2 and NT3. Research results have shown that irrigation in the dry season has a significant effect on leaf yield of Trichanthera gigantea green fodder and should be irrigated at 120 m3/ha/harvest.

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