EFFECT OF PLANT SPACING ON CHINESE KALE YIELDS IN CROP STATION AT ROYAL UNIVERSITY OF AGRICULTURE,ឥទ្ធិពលចន្លោះគុម្ពលើទិន្នផលដំណាំខាត់ណាដើមនៅស្ថានីយពិសោធន៍ដំណាំនៃសាកលវិទ្យាល័យភូមិន្ទកសិកម្ម BIM MONGRITHY,ប៊ីម ម៉ុងរិទ្ធី AGR BIM 2021 B1-442 Or. phnom penh rua 2021 2021 Text ix.28p. https://drive.google.com/file/d/1okR1An4nnWmJZ_87ZHAedV_IJMRZccrF/view?usp=sharing