ĐÁNH GIÁ KHẢ NĂNG THÍCH ỨNG CỦA MỘT SỐ DÒNG, GIỐNG LÚA THUẦN MỚI CHẤT LƯỢNG CAO TẠI VÙNG BỊ XÂM MẶN DO BIẾN ĐỔI KHÍ HẬU CỦA HUYỆN KIM SƠN, TỈNH NINH BÌNH

In rice-growing regions of Kim Son district, Ninh Binh province, the level of salinity in fields is rather high, from 5-8‰, at some time it is up to 10‰. The current structure of rice is 60% conventional, high quality rice varieties, mainly Bac thom No. 7; LT2; Khang dan 18; HT1; Glutinous rice varieties and 40% is hybrids with average yield of 64 -65 quintals/ha. Trial test results show that two rice varieties HT6 and M15 are capable of adapting to salinity intrusted areas, its grain rice is fragrant, tasty, yield of over 60 quintals/ha in both spring and summer crops, higher economic effeciency than the control from 18% to 19%. Trial test on different types of fertilizers on salined soils showed that the application of NPK fertilizers by Ninh Binh and Lam Thao superphosphate helped to give high efficiency, HT6 yielded 64 and 61 quintals/ha with the 2 types of these fertilizers, respectively.