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以稻花香2号为试验材料,基肥采用隔年腐熟的农家肥,追肥使用石家庄希望肥业科技有限公司生产的商品有机肥。在常规施肥(翻地前施有机肥15 000 kg/hm~2)的基础上,分别在分蘖初期(6月8日)、分蘖高峰期(6月23日)、孕穗期(7月8日)、齐穗期(8月5日)追施1875 kg/hm~2商品有机肥。试验结果表明:分蘖高峰期~齐穗期追施有机肥,可以增加产量4.33%~12.17%。分蘖高峰期追肥单穴平均穗数比对照增加12.00%;分蘖高峰期和孕穗期追肥穗粒数比对照增加17.00%、19.00%;孕穗期和齐穗期追肥饱满粒率比对照提高2.60%、6.53%。各生育时期追施有机肥的作用表现为:分蘖高峰期追肥可以提高有效分蘖数量;分蘖高峰期和孕穗期追肥可以提高每穗平均粒数;孕穗期和齐穗期追肥可以提高混合千粒重和饱满粒率。各生育阶段追施有机肥对稻米品质无明显的不良影响,并且还有助于提高精米率、整精米率,并随着施肥期的后延,垩白粒率也有所降低。
To rice flower incense 2 as the experimental material, basal fertilizer used in the next year maturity of farmyard manure, fertilizer use Shijiazhuang Hope Fertilizer Technology Co., Ltd. production of organic fertilizer. On the basis of conventional fertilization (15 000 kg / hm ~ 2 organic fertilizer before turning landfill), the effects of different fertilization treatments on the early tillering stage (June 8), the tillering stage (June 23), booting stage (July 8 ), Full heading (August 5) topdressing 1875 kg / hm ~ 2 commercial organic fertilizer. The results showed that organic fertilizer could be increased from 4.33% to 12.17% at tillering stage to heading stage. The average spike number of topdressing single-point in tillering peak increased by 12.00% compared with the control; the number of spikelets per spike increased by 17.00% and 19.00% at the peak tillering and booting stage compared with the control; the grain-filling rate at heading and heading stage increased by 2.60% 6.53%. Topdressing organic fertilizers at each growth stage showed that topdressing tillering could increase effective tillering number; top-tillering and booting topdressing could increase the average number of grains per spike; topdressing and heading could increase the grain weight and fullness Grain rate. Topdressing organic fertilizers during the whole growth stages had no significant adverse effect on rice quality, and also helped to increase the milled rice yield and milled rice rate. With the delay of fertilization period, the chalky grain rate also decreased.