Bulletin

CropWatch bulletin

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埃及
孟加拉国Main producing and exporting countries

Authors: 超级管理员 | Edit: zhangxin

The CropWatch indicators show average crop condition during the reporting period.The monitoring period is the growing and harvesting season of irrigated boro rice. Rainfall was 23 percent above the recent average, while temperature was average, photosynthetically active radiation slightly low (-4 percent), and biomass accumulation a bit above (3 percent) average. The cropped arable land fraction (CALF) increased by 1 percent. Crop condition development, as assessedby national NDVI, was below both the previous five-year average and 2015. The recorded maximum VCI value was 0.74. The ranges of the maximum VCI values were between 0.5 to 1, indicating average crop condition for the entire country.However, VCIx values below 0.5 were noticed in Chittagong, western Rajshahi,and northern Khulna, indicating poor crop condition in these areas. In Rangpur,Rajshahi, and Dhaka the NDVI profiles dropped after early February and recovered in mid-March only to drop again in mid-April. On the contrary, other region’s NDVI profiles steadily progressed until early April and started dropping there after. Overall, average output is expected for boro rice.

本次通报监测期覆盖了水稻的生长期和收获期。CropWatch 监测指标显示,监测期内作物长势处于平均水平。降水较平均水平增加23%,温度处于平均水平,而光合有效辐射略微降低(4%),导致潜在累计生物量较平均水平有所增加(3%)。此外,可种植耕地比例增加了1%。NDVI过程线显示,该国作物长势较近五年平均水平和2015年均低。植被状态指数最大值为0.74,并且植被状态指数最大值位于0.5和1之间,这表明整个国家的作物长势处于平均水平。然而,吉大港、拉杰沙希西部、库尔纳北部的植被状态指数最大值低于0.5,表明这些地区的作物长势较差。NDVI距平聚类过程线显示,朗布尔、拉杰沙希和达卡作物长势在2月初开始下降,在3月中旬恢复后在4月中旬又开始下降。相反,其余地区的作物长势在4月初之前较为平稳地发展,之后才开始下降。总体来说,水稻产量预计将达到平均水平。