春西蓝花一单季晚稻轮作模式下直播晚稻适宜播种量筛选

打开文本图片集

中图分类号 S511 文献标志码A 文章编号 1007-7731(2026)02-0001-03

DOI号 10.16377/j.cnki.issn1007-7731.2026.02.001

Screening of suitable seeding rates for direct-seeded late rice under the rotation model of spring broccoli and single-season late rice

Zhu BeigeZhou Honghai Zheng Huazhang (Agricultural Technology Extensionand Service StationofYuyao City,Zhejiang Province,Yuyao 31540o,China）

AbstractThis experimentwasconducted inYuyao City,ZhejiangProvince,toinvestigate theefectsofdifferent seeding rates on the yield of direct-seeded late rice under the spring broccoli + single-season late rice rotation model. The rice variety Yongyou 1540 was used as the test material,5seedingrate treatments were designed: 11.25(T1),5.00 (T2), 18.75 (T3), 22.50 (T4), and 26.25kg/hm2(T5). Parameters such as rice growth period, tillering dynamics,and yield were measured for each treatment.The results showed that diferent seeding rates had no significant efectonthe rice growth period.The numberofseedlings during the tilering stage generally increased with higherseeding rates (except in the surveyconductedonAugust5).In terms of economic traitsand yield,treatmentT3achieved thehighestnumberof effective panicles (2.45 million panicles/hm²) and seed-seting rate (86.7 % ),while treatment T4 achieved the highest 1 000-grain weight (22.6 g). The yields treatments T3 and T4 were higher outputs of 7 877 and 7 658kg/hm2 respectively. In conclusion, under the spring broccoli + single-season late rice rotation model, the suitable seeding rate for single-season late rice ranges from 18.75 to 22.50kg/hm2 ：

Keywordsbroccoli-vegetable rice rotation; single-season late rice; seeding rate; yield

常规水稻单一种植模式连年施用同种化肥、农药，可能导致土壤有害物质积累，加重田间病虫草害，进而影响稻米安全生产。（剩余5456字）