2007•Hubei nongye kexueRequires access
Research on the Effect of the Late-season Rice Cultivar & the Sowing Seeds Quantity Under Direct Seeding with Zero-tillage
XU Shao-hua
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Abstract
The effect of sowing seeds quantity on the hybrid rice Jin-you 928 and conventional rice variety A under direct sowing with zero-tillage was studied with the sowing seeds quantity: 30 kg·hm-2,60 kg·hm-2,90 kg·hm-2,120 kg·hm-2,150 kg·hm-2,180 kg·hm-2.The result indicated: the growth duration of the two varieties was reduced along with increasing sowing seeds quantity,the height,leaf age,tiller rate and seed rate were descended.The best seeding quantity for hybrid rice Jin-you 928 was 30 kg·hm-2 and conventional rice variety A was 60～90 kg·hm-2.The yield of Jin-you 928 was higher than that of variety A under the proper seeding quantity.