秧板处理及育秧方式对机插杂交稻秧苗生长、产量及育秧成本的影响

Effects of Seedbed-preparing and Seedling-raising Methods on Seedling Growth, Grain Yield and Seedling-raising Cost in Machine-transplanted Hybrid Rice

为探讨适宜于四川盆地麦(油)茬机插稻的配套育秧技术,以冈优725为材料,研究了秧板处理和育秧方式对机插杂交稻秧苗生长、产量及育秧成本的影响。结果表明,少耕实底双膜育秧处理秧苗矮,根系活力强,单株根数多,用水量少,有利于提高秧龄弹性,适合于机插长秧龄育秧;从育秧成本和产量分析,少耕实底软盘育秧处理育秧成本最低,产量较高,具有节本增效优势。

Using Gangyou 725 as the plant material, the effects of seedbedpreparing method （A） and seedlingrai sing method （B） for machinetransplanted rice were studied on the growth of seedlings, grain yield and the cost in raising seedlings, to develop suitable seedlingraising techniques for machinetransplanted rice after rape or wheat harvest in Sichuan Basin. The seedbedpreparing methods included the minimal tillage with solid base （A1）, rota ry tillage with muddy base （A2） and rotary tillage with loose base （A3） ; and the seedlingraising methods includ ed the double plastic film mulching （B1）, plastic tray （B2） and weave cloth mulching （B3）. The results showed that the treatment of A1B1 bad a lower seedling height, a greater root activity, more roots per plant and less water consumption, so it was favorable to improve seedlingage flexibility and suitable for the mechanized transplanting of seedlings with a longer age. However, based on the analysis of grain yield and seedlingraising cost, the treatment of A1B2 had the superiority of costsaving and efficiencyincreasing for its lowest seedlingraising cost and higher grain yield.