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万顷麦浪,丰收在望。这时,如果突然刮起又干又热的西南风或偏南风,连续几天功夫,就会使小麦叶片凋萎卷缩,麦芒炸开,穗子发灰,籽粒干瘪,产量下降,丰收就成了“风收”,群众把这种受害后的小麦籽粒,形象地比喻成“雀舌头”,千粒重大大降低,可减产10—40％。 干热风为什么对小麦生育后期会产生这么大的危害呢?小麦从灌浆到成熟阶段,植株体内物质的合成、转化和运输都很活跃,在这个时期如果遇到了干热风,在高温、低湿和风综合影响下,植
Wanheng Mai Lang, harvest in sight. At this time, if a sudden dry and hot southwest wind or southerly wind, for several days Kung Fu, will make the wheat leaf wilting crimp, broom blasting, ears gray, shriveled grain, yield decline, harvest on Became the “wind collection”, the masses of the victims of the wheat grain, vividly compared to “sparrow”, a significant reduction of 1000 grain, can cut 10-40%. Dry hot air Why the late growth of wheat will have such a big harm? Wheat from the filling to mature stage, plant material synthesis, transformation and transport are very active, during this period if you encounter a dry hot air, high temperature, low humidity and wind integration Under the influence of planting