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以早熟油菜品种青杂131为试验材料,采用播期和播量2个试验因素设计,分析了不同播期(10月22日、10月26日、11月3日和11月10日)和播量(4.5 kg/hm2、6.0 kg/hm2和7.5 kg/hm2)对早熟油菜主要经济性状和产量的影响。结果表明:播量和播期均能显著影响菜籽产量。在相同播量条件下,随着播期的推迟,油菜生育期缩短,主要经济性状变劣,最终导致产量降低;在相同播期条件下,随着播量的增加,油菜的群体数量增大,这间接地提高了单位面积的分枝数和有效角果数,进而可达到增产的目的。在双季晚稻田免耕直播种植青杂131时,应适时早播并适当加大播种量,通过增大群体数量来提高稻田油菜的产量。本研究条件下,早熟油菜青杂131在10月22日播种、播种量为7.5 kg/hm2时,产量可达到1800 kg/hm2以上。
Using early maturing rape cultivar Qingza 131 as test material, two sowing dates and sowing factors were used to design and analyze the effects of different sowing date (October 22, October 26, November 3 and November 10) Effects of Seeding Rate (4.5 kg / hm2, 6.0 kg / hm2 and 7.5 kg / hm2) on Main Economic Characters and Yield of Early Rape. The results showed that both the sowing date and sowing date could significantly affect rapeseed yield. Under the same sowing date, the rape growth period shortened and the main economic traits became worse with the delay of sowing date, which eventually led to the decrease of yield. Under the same sowing date, the population of rape increased with the increase of sowing date , This indirectly increased the number of branches per unit area and the effective number of pods, and thus can achieve the purpose of increasing production. In the double cropping late rice no-tillage planting Qingza 131, it should be timely and timely sowing the appropriate amount of seeding, by increasing the number of groups to improve the yield of rapeseed. Under the conditions of this study, the early-maturing rapeseed hybrid 131 was sown on October 22, with a sowing rate of 7.5 kg / hm2, the yield could reach more than 1800 kg / hm2.