..............page:26-29,51
..............page:12-15,55
Variation of soil nutrients in cover vegetable field in south Hebei province
meng yan_ling~(1; 3); ma bao_guo~2; liu zi_ying~1; li ji~3(1.department of agriculture; hebei university of engineering; handan hebei 056001; 2.department of hydroelcctric power; hebei university of engineering; handan hebei 056001; 3.department of resources and environment; china agricultural university; beijing 100094)
..............page:23-25,37
Problems of Persist Organic Pollution in some organic manures
cao wei_dong~1; wang xu~1; liu chuan_ping~2; feng zhao_hui~1; liu hong_fang~1; li fang_bai~2(1.institute of agricultural resources and regional planning; chinese academy of agricultural sciences; beijing 100081; 2.guangdong institute of eco-environment and soil sciences; guangzhou 510650)
..............page:8-11
..............page:69-71,68
The effect of seaweed extract on vegetables
sun jin~1; han li_jun~2; yu qing_wen~1(1.vegetable institute of gansu academy of agricultural science; lanzhou 730070; 2.oceanology institute of chinese academy of science; qingdao 266071)
..............page:47-51
Effect of nitrogen,phosphorus and potassium application on yield and qualities of Xinhai 16 super sea cotton
tan yong~(1; 3); zhang yan~2; wen qi_kai~1; li pan~2; mo zhi_xin~4(1.college of resource and environment; xinjiang agriculture university; urumchi 830052; 2.soil and fertilizer institute; xinjiang academy of agriculture science; urumchi 830000; 3.the centre of soil and water of conservation and ecoenvironmental research; academy of science; yangling shaanxi 712100; 4.college of plant science and technology; tarium university; alar xinjiang 843300)
..............page:34-37