ẢNH HƯỞNG CỦA TRỒNG XEN CÂY PHỦ ĐẤT ĐA DỤNG ĐẾN CANH TÁC CHÈ BỀN VỮNG TRÊN ĐẤT DỐC TẠI TỈNH LÀO CAI

Tea (Camellia sinensis L.) is grown in our country long time ago, mainly distributed in the midland and mountainous, the dominant plant species including economically important - social and environmental protection. However, the country's tea production is very low, only 90% of the world, the average tea selling price by 70% of the world, the main reason is because farming techniques have been eroded soil, washed and pest infestation due to productivity and quality is not high tea. The study identified the shade legumes, improving land cover suitable for tea intercropping in order to gradually improve the quality of tea land, contributing to wealth creation, protection and exploitation of potential efficiency energy slope is requirement of current production. Results of trials assessing the initial impact of planting shade trees, ground cover has improved to the growth and development of varieties LDP1 initial establishment phase in Bao Thang, Lao Cai to see: actual tea yield increase from 10 to 22%, reduce erosion from 27 to 74% compared to no planting cover crops purpose. Also, soil quality is also improved when the plants intercropped. The model has intercropping cover crops in tea yield increased from 15.9 to 18.4%, increase economic efficiency and net interest from 2.0 to 2.02 million VND/ha over the control.