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我省各地早稻缺磷发僵较为普遍,是夺取早稻大面积丰产急待解决的问题。早稻发僵各地叫法,有“坐蔸”、“发瘘”、“地火”、“发噤”、“发闹”等几种。土壤缺磷是引起早稻发僵的主要原因之一。除此以外,以下几种情况也会引起发僵:①受山垅冷水、冷泉或地下水的影响,水温、土温低,会引起冷浸发僵;②绿肥压青太迟,用量太多,或施用大量未经腐熟的有机肥料,会因产生某些毒质或造成营养元素(特别是氮素)的供应失调,而引起发僵;③土壤含
The incidence of phosphorus deficiency in early rice throughout the province is quite common, which is an issue that needs to be solved urgently in large-scale and high-yielding early rice. Rough stiff call around the country, there are “sit up”, “fistula”, “to fire”, “hair 噤”, “hair” and so on. Soil phosphorus deficiency is one of the main causes of stiff rice. In addition, the following situations can also cause stiffening: ① affected by cold water, cold spring or groundwater in mountain ridge, water temperature and soil temperature will cause cold dip stiff; ② green manure is too late to be used in too much dosage, Or application of a large amount of non-decomposed organic fertilizer can cause stiffening due to the production of certain toxins or the supply disruption of nutrients (especially nitrogen); ③ soil