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3年研究结果表明:旱育秧苗移栽后,分蘖温度低,日平均气温达到11℃早粳1号已开始分蘖。旱育秧的主茎分蘖强,有效穗多,每穗实粒多,产量高,增产幅度达10%左右。太阳辐射和温度对有效穗和穗粒数影响较大。梅雨初期“阴害”对早籼品种的抽穗扬花和灌浆初期危害较大。文中考虑气象和作物群体因素而建立的水稻产量统计动态模式,由有效穗、每穗粒数、空壳率和千粒重4个子模式组成,精度较高。
The results of 3 years showed that the tillering temperature was low and the average daily temperature reached 11 ℃ after transplanting of dry-seedling seedlings. Early Japonica 1 started tillering. The main stem of dry nursery seedlings had strong tillering, more effective spikes, more grains per panicle, higher yield and yield increase by about 10%. Solar radiation and temperature have a greater impact on the effective spikes and grains per spike. In the early Meiyu period, “Yin-Yin” was more harmful to the heading and flowering and early filling of early indica varieties. The statistical dynamic model of rice yield, which is established by considering the meteorological and crop population factors, consists of four sub-modes: effective panicle, spikelet per panicle, shell percentage and 1000-grain weight, with high precision.