Adaptation to the climate change

The influence of climate change on China agriculture is considerably important. It is necessary to take appropriate measures to adapt climate change influences on the agricultural production. The possible measures are summarized as follows:

1) Adjusting the cropping system to make full use of heat energy resource. It needs to carry out the research of adaptation of fine cultivars to changing climate before introducing them. With regard to the existing cul-tivars, the sowing period should be suitably adjusted according to the warming climate to settle the main growth period in a better climate condition.

2) Expanding the production of greenhouse crops to ensure the supply of agricultural products in the winter. The greenhouse crops will grow better under the warming climate, thus the risk of cold injury disaster is reduced. In addition, the growth of crops will be sped up in warm greenhouse and the market will be supplied by abundant productions.

3) Improving the forecast of crop diseases and insect pests. The climate conditions of the prevailing crop diseases and insect pests and their mechanism should be studied. The monitoring and predicting technology should be developed. The occurrence and development of crop diseases and insect pests should be traced as soon as possible, and their future development should be forecasted accurately. Statistics of 17 main crop diseases and insect pests such as rice blast, Rhizoctonia solani, powdery mildew, corn borer and cotton bollworm should be carried out. The loss is expected to reduce by more than 30% if the years with great prevalence possibility are predicted accurately and the appropriate control techniques are undertaken.

4) Strengthening the field management to develop the water-saving agriculture and to defense drought disasters. The drip irrigation, sprinkler irrigation, subsurface irrigation and micro-irrigation should be used to reduce the ineffective evaporation and leakage, and to enhance the water use efficiency. The plastic mulching technology can also save a large quantity of water. For example, this technology can save 60% water in Hexi corridor region.

5) It's important to breed and select the cultivars with high photosyn-thetic efficiency and better adaptability to flood, drought and extreme temperature. The crop distribution should be improved by developing winter cropping, double-cropping of wheat and cotton, wheat/maize intercropping, double-cropping of rice and so on, which are effective methods to increase the multi-cropping index and the time of crop photosynthesis.

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