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当前江淮中下游一季粳稻正处于分蘖末期,籼稻处于拔节长穗至抽穗期,也是水稻生长发育需水、需肥最多的时期,也是对气温敏感的时期。根据江淮中下游地区水稻苗情特点,农业部水稻专家指导组提出了加强田间管理的技术指导意见。以水调温防高温热害。已进入孕穗至抽穗期水稻,如遇35℃以上的高温,会影响扬花授粉和结实率,可采取深水灌溉以水调温,还可采取叶面喷施磷钾肥等措施缓解或减轻危害。
At present, the first season japonica rice in the middle and lower reaches of the Jianghuai is at the end of tillering stage and the indica rice is in the period from jointing to spikeering to heading stage. It is also the time when rice needs water for growth and development, and needs the most fertilizer, and is also sensitive to temperature. According to the characteristics of rice seedlings in the middle and lower reaches of the Jianghuai region, the rice expert steering group of the Ministry of Agriculture proposed technical guidance for strengthening field management. To water temperature anti-heat damage. Has entered the booting to heading rice, in case of high temperatures above 35 ℃, it will affect pollination and seed setting rate can be taken deep water irrigation to adjust the temperature, but also to take foliar phosphorus and potassium fertilizer and other measures to alleviate or reduce the harm.