赣紫2号的留种高产配套栽培技术研究

High-yielding Cultivation Techniques for Stock Seed of Ganzi No.2

探讨了不同类型土壤、播种期、播种量、磷肥和钾肥施用量,以及稀土、硼、钼肥微肥不同施用方法、多效唑不同施用时期等对赣紫2号的鲜草和种子产量的影响,结果表明:较理想的土壤为有机质较丰富的沙壤土;播种期为9月10日至10月20日;最佳播种量为22.5～30 kg/hm2;磷、钾肥施用量分别为300～375 kg/hm2、45.0～67.5 kg/hm2;蕾期或初花期喷施0.5%稀土;用0.1%的硼酸、0.05%的钼酸铵浸种;伸长期或初花期喷施0.025%多效唑等均能显著提高赣紫2号的种子产量。

The effects of different soil type,seedtime,seeding rate,application rate of phosphorus and potassium fertilizer,application method of microelement fertilizer such as rare earth,boron manure and molybdenum manure,as well as the application time of paclobutrazol on the fresh grass and seed yield of Ganzi No.2 were studied.The results showed that the seed yield of Ganzi No.2 could be significantly increased by the following cultivation techniques： planting in the sandy soil with abundant organic matter,sowing from September 10th to October 20th,seeding at the rate of 22.5~30.0 kg/hm2,applying 300~375 kg/hm2 phosphorus fertilizer,applying 45.0~67.5 kg/hm2 potassium fertilizer,spraying 0.5% rare earth at budding stage or early flowering stage,soaking the seeds by using 0.1% boric acid and 0.05% ammonium molybdate,and spraying 0.025% paclobutrazol at elongating stage or early flowering stage.