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Grain crops
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- Balanced fertilizers boost potato yield in Tibet
Potato is a very important and traditional food crop in Tibet where people treat it as a kind of “vegetables”…
- Focusing on Developing Tibet
Tibet enjoys rich solar radiation, adequate rainfall and tremendous fresh water resources…
- Balanced fertilizer research and demonstrations for grain crops and grassland in Tibet in 2003
In order to further verify the soil nutrient limiting factors found in Zhanang County of Tibet in 2002 and provide useful technology of balanced fertilization to farmers, field experiments were conducted on major local crops. Results showed that the major soil nutrient limiting factors were N and K. Balanced fertilization with N: P2O5: K2O at the ratio of 3: 1: 2 should be highly recommended which can not only reduce farmers’ input, but also increase crop yield and farmers’ income.
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- Balanced fertilizer research and demonstrations in the poverty alleviation area in Tibet
In order to understand the nutrient limiting factors in the Basic Human Needs Project area located in Zha-nang County, Tibet and provide the technology of balanced fertilization for farmers, field experiments and demonstrations were conducted on major local crops. Results showed that the major nutrient limiting factors were found to be N, K, Mg, S, Mn and Mg. Under the current circumstances of absence of fertilizers for secondary nutrient and micronutrients on the Tibetan fertilizer market, balanced fertilization with N, P and K is highly recommended for farmers. Since soils contain relatively adequate amount of P, reduction in P and increase in K application can not only significantly enhance crop yields but also reduce farmers’ fertilizer input and increase farmers’ economic returns.
- Effect of specific nutrient management on paddy rice in Yunnnan province
In order to explore more effective nutrient management strategies for improving fertilizer use efficiency for three macronutrients and economic profit of paddy rice, a long term field trial was conducted at Xiadianxing monitor village in Songmin county. Results indicated that missing N, P or K from the fertilizer program would result in a decrease in yield and nutrient uptake by plant. Meanwhile, the missed nutrient influenced uptake and fertilizer use efficiency of the other two.The highest yield was achieved by application of 300-120-180 kgN-P2O5-K2O /ha, leading to highest fertilizer use efficiency as well as nutrient uptake by rice. This treatment is considered as the fertilizer recommendation for local rice production.
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