Reserch advances on obstacles and Modulations of soybean continuous cropping
wang li\|gang; shen alin; sun ke\|gang; wu ju\|chen (soil and fertilizer institute; henan academy of agricultural sciences; zhengzhou 450002)

..............page:3-8

Effect of Organic Manure on Phosphorus-Supplying Capacity in Arid Red Soil
wang ku 1; he dong\|fang 2 (1.institute of soil science; chinese academey of sciences; nanjing; 210008; china; 2.nanjing agricultural university; nanjing; 210095; china)

..............page:19-22

fei liao tou ru yu ping heng tu rang yang fen ji chan chu xiao ying yan jiu
yao yan ping ; ye mei ; xue zhu tian

..............page:14-18

Techniques of Return All Straws to field in the Rice-wheat double Cropping System of southern Jiangsu
gu zhi\|quan 1; li qing\|kang 2; zhao qiang\|ji 2 (1.agricultural bureau of zhangjiagang county; zhangjiagang city; 215600; 2.jiangsu academy of agricultural sciences; nanjin; 210014)

..............page:23-26

Nutrient input and evaluation of fertilization efficiency in typical tea areas of China
ruan jian\|yun; wu xun; shi yuan\|zhi; ma li\|feng (tea research institute; chinese academy of agricultural sciences; hangzhou zhejiang 310008)

..............page:9-13

jia fei zai mian hua shang de shi yong xiao guo chu tan
zhang jin bang ; wang yong ; mao yun feng ; song yuan rui

..............page:43-44

yu mi zhuan yong fu hun fei shi yong zhong de wen ti ji dui ce
wang jian ming ; wang bin

..............page:45

gui fei dui xiao mai yang fen xi shou yu guang he wu zhi sheng chan de ying xiang
gao shu ping ; zuo lin sheng

..............page:35-37

bi jie di qu yan di tu rang zhong lin suan mei huo xing yan jiu
yang yuan ping ; zeng shi wen

..............page:41-42

Determination of Boron Content in Soil and Fertilizer by ICP AES
fan hong\|li; liu mi (soil and fertilizer institute; caas; beijing 100081)

..............page:38-40,42

A Study on the Availability of Fe in the Dry Farming Yellow Moist Soil
zhang zhu\|xin; yang kai\|yan; wang ping; gao yan (the agriculture and forestry department of kaifeng city; 475000)

..............page:27-30

Techniques of Application Zinc Sulfate under Cover Conditions for Dry Land in Pingliang
li huan\|feng (pingliang soil fertility station; pingliang; gansu 744000)

..............page:31-34

ping heng zai pei ti xi zhong de zhi wu yang fen ping heng ( )
cao gong ; liang ming zao

..............page:46-47