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水稻如果缺乏任何一种或者几种营养元素,在外部形态上就会表现出特有的病状,这种病状就叫做缺素症,水稻得了缺素症,植株就会生长发育不良,叶黄株瘦、穗小粒轻,导致减产,严重时甚至基本无收。1.水稻缺素症状1.1缺钾:叶片从下位叶开始出现赤褐色焦尖和斑点,并逐渐向上位叶扩展,严重时田间景观稻面发红如火燎状。株高降低,叶色灰暗,抽穗不齐,成穗率低,穗形小,结实率差,籽粒不饱满。由于栽培季节、品种类型和土壤条件不同,
Rice lack of any one or several nutrients, the external morphology will show a unique pathology, the disease is called deficiency, the rice has been deficient, the growth of plants will be dysplasia, leaf and plant weight loss , Spikelet light, resulting in reduced production, even when basically no income. 1. Rice deficiency symptoms 1.1 potassium deficiency: leaves from the lower leaves began to appear auburn coke and spots, and gradually extended to the upper lobe, the field landscape rice fields in severe redness like lusty. Plant height is reduced, leaf color is gloomy, heading is not homogeneous, ear rate is low, spike shape is small, seed setting rate is poor, grain is not full. As the cultivation season, different types of cultivars and soil conditions,