论文部分内容阅读
为探明洞庭湖平原区不同播种期和留桩高度条件下再生稻产量及产量构成因素的变化特征,明确该区域适宜的播种期和留桩高度,以黄华占为材料,开展了不同播种期和留桩高度对再生稻产量及产量构成因素影响的研究。结果表明:以4月15日播种的再生稻产量最高,达3 486.8 kg/hm~2;留桩高度为30 cm的再生稻产量最高,为3 474.5 kg/hm~2;4月15日播种、且留桩高度为30 cm的两季水稻产量最高,为13 933.5kg/hm~2。由此可见,在洞庭湖平原区采用直播方式作再生稻,以4月15日左右播种、留桩高度30~40 cm,能获得较高的两季水稻产量。
In order to find out the characteristics of yield and yield components of ratooning rice under different sowing dates and stubble height in the Dongting Lake plain, the suitable sowing date and stubble height of the ratooning rice in this area were determined. Taking Huanghuazhan as material, Effect of Pile Height on Yield and Yield Components of Ratooning Rice. The results showed that the highest yield of ratooning rice planted on April 15 was 3 486.8 kg / hm ~ 2 and the highest yield of ratooning rice with a pile height of 30 cm was 3 474.5 kg / hm ~ 2. Sowing on April 15 , And the two-season rice with the pile height of 30 cm had the highest yield of 13 933.5kg / hm ~ 2. Thus it can be seen that in the Dongting Lake plain area, the direct seeding method is used for ratooning rice and the sowing time is about April 15, leaving the pile height of 30-40 cm, thus obtaining a higher yield of rice in the two seasons.