At present, rapeseed in Hunan Province is at the end of flowering to pod-forming period. It is expected that Hunan rapeseed will mature in the middle and early May in May and harvest 3 to 5 days later than normal. According to the Hunan Climate Center, the average temperature in mid-April to early May is slightly higher in northwestern Hunan and northeastern Hunan, and the rest is slightly lower. The total rainfall is slightly lower in northwestern Hunan and northeastern Hunan, and the rest is slightly more normal. The total monthly rainy days are 15 to 17 days. It is expected that there will be low-temperature and rainy weather in the middle and late April; the precipitation in the next 30 days will be much lower than before, and the precipitation intensity will increase from the end of April to the beginning of May.
According to the prediction of the late weather and climate, the future agrometeorological conditions are basically favorable for the maturity of rapeseed and strong seeds. In order to strive for the harvest of rapeseed, the following suggestions are proposed for the management of rapeseed production:
1. Strengthen the management of rapeseed fertilizer and water, increase the application of flower pod fertilizer in a timely manner, and promote the rapeseed pods and strong seeds. At present, rapeseed grows better, but the growth period is too late. It is necessary to use sunny weather, increase the application of boron fertilizer, promote the growth of rapeseed, and improve the seed setting rate and ripening weight of the tail pod at the end of flowering.
2. There are still many precipitation processes in the mature period of rapeseed, and there may be even rainy weather. It is necessary to strengthen the water management of rapeseed and the prevention and control of pests and diseases. After the rain, it is necessary to clear the ditch and drain water in time to improve the soil permeability and promote the development of crop roots to enhance the rapeseed. Resistance to disease and lodging resistance.
3, May and mid-May is the key period for the mature harvest of Hunan rapeseed, but the rainy weather is an important factor affecting the harvest yield. It is recommended to catch the fine weather and get the sun in time.
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