KẾT QUẢ NGHIÊN CỨU ẢNH HƯỞNG CỦA MẬT ĐỘ VÀ SỐ DẢNH CẤY ĐẾN NĂNG SUẤT GIỐNG LÚA JAPONICA ĐS3 TRONG PHƯƠNG THỨC CANH TÁC HÀNG RỘNG - HÀNG HẸP VỤ XUÂN 2018 TẠI HUYỆN TRIỆU SƠN, TỈNH THANH HÓA

Abstract

The study of density and the number of transplanted tillers to the yield of Japonica DS3 variety in wide and narrow distance cultivation was conducted in Spring 2018 in Trieu Son district, Thanh Hoa province. The experiment included 12 treatments with 2 factors: Density’ (M) Included 4 levels of M1: 30 clusters per m2, M2: 35 clusters per m2, M3: 40 clusters per m2 and M4: 45 clusters per m2. The number of transplanted tillers per cluster (D) included 3 levels of DI: 1 tiller per cluster, D2: 2 tillers per cluster and D3: 3 tillers per cluster.
The results showed that: Treament 2 (M1D2) with the density of 30 clusters per m2 and 2 tillers per cluster and treatment 4 (M2D1) with the density of 35 clusters per m2, 1 tiller per cluster offered the highest real yield o f 7.35 ton/per ha and 3.32 ton/ha and higher than other treatments in experiment at the probability significant level of LSDo.05 (M*D) = 0.45 ton/ha; the net profit reached 23.5 7 millions VND/ha and 23.61 millions VND/ha.
Keywords: Cultivating technique, density, number o f transplanted tillers, Japonica DS3 variety, wide and narrow cultivation, yields.