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用1996、1997年的分期播种田间试验资料,建立水稻旱育抛秧发育期模型和产量构成因子模型,包括茎蘖动态模型、千粒重增长模型、每穗实粒数模型,分析高产特征及机制。结果指出,水稻抛秧移栽与手插移栽相比,移栽迟滞期短;群体茎蘖数,粳稻高16%,籼稻高23%;千粒重,粳稻低1%,籼稻高9%;每穗实粒数无区别;总产量,粳稻高16%,籼稻高9%。抛栽秧苗随机均匀分布,入土深度较浅,从而营造了合理的群体结构,提高了产量。最后,提出抛秧稻生长中应注意的气象问题。
Field experiment data were sown in stages of 1996 and 1997 to establish the model of the developmental period and the yield components of rice in dry-farming and throwing rice, including the dynamic model of stem and tiller, the growth model of 1000-grain weight, the grain-per-spike model and the analysis of high yield characteristics and mechanism. The results showed that transplanting rice seedling transplanting compared with the hand transplant transplanting lag period short; population stems and tillers, 16% high japonica rice, indica rice high 23%; 1000-grain weight, japonica rice 1% low, 9% There was no difference between the grains of spikelets; the total yield was 16% higher for japonica rice and 9% for indica rice. Throwing planted seedlings evenly distributed evenly, shallow depth of soil, thus creating a reasonable population structure and increase production. Finally, we put forward the meteorological problems that should be noticed in the growth of throwing rice.