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《Pratacultural Science》 1992-03
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ECONOMIC BENEFITS OF K APPLICATION RATE ON IMPROVED LEGUME PASTURE IN THE MID-ALTITUDE REGIONS OF YUNNAN PROVINCE

Huang Bizhi, He Zhanxin (Yunnan Beef Cattle & Pasture Research Centre, Xiaoshao, Yunnan Province, 650212) and Song Sunlu (Yunnan Sheep Farm, Xundian, 655025)  
A trail on the economic benefits of K application rate for legume based improved pasture was carried out in the mid-altitude regions of Yunnan. The preliminary results showed the herbage yield was increased as increase of K fertilizer under the experimental conditions. The herbage yieid was 2500kgDM/ha at the rate of 4Okg/ha K, one kg of Potassium produced 25 kg DM. When the application rate of K is more than 40 kg/ha, although the total yield of pasture increased, the ratio, of input and output began to decrease.
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