南方丘陵地区不同晚稻品种适应性分析

Adaptability Analysis of Different Late Rice Varieties in Southern Hilly Region

为了筛选适合南方丘陵地区种植户增产增效的晚稻品种,通过小区试验,研究5个不同晚稻品种的农艺性状、抗病抗逆性、产量及其构成特征,比较分析了其农艺性状、抗逆性、产量和经济效益。结果表明:在同等肥料和管理投入的条件下,泰优390的最高苗、有效穗数最高,品种长势整齐繁茂、叶色浓绿、叶姿挺直、熟期转色好、耐寒性强,产量最高,为515 kg/667m^2,经济效益为1362元/667m^2,相比产量最低的星优1号,增产317.4元/667m^2,增收295.4元/667m^2,增幅分别为30.4%和28.3%。因此,针对南方丘陵地区气候复杂多变、湿度大、易发病的条件下,建议推荐种植分蘖能力强、株高适中、产量较高、抗逆性较强的泰优390,有利于水稻种植户和企业的增产增收。

In order to select late rice varieties with higher yields and benefits suitable for households in hilly regions of southern China,this paper studied and comparatively analyzed the agronomic traits,disease resistances,yields,characteristics and output values of five late rice varieties through plot experiments.The results showed that under the same fertilizer and management input conditions,Taiyou 390 was the top one in terms of the maximum number of tillers per plant and effective panicles;growing uniformly and vigorously with dark green,erect leaves,it presented a strong cold tolerance and good maturing color;Taiyou 390 finally got 7725 kg/hm^2 of yield and 20430 yuan/hm^2 of economic benefit,ranking the first,which were 30.4%and 28.3%higher than the lowest output Xingyou 1,respectively by the yield increase of 4761 yuan/hm^2 and income growth of 4431 yuan/hm^2.In view of complex climate changes,high humidity and susceptibility to diseases in the hilly areas of the south,it is recommended to grow Taiyou 390 for its strong tillering ability,moderate plant height,high yield and strong resistance,which is beneficial for rice growers and companies to get more yields and incomes.