Title: Screening of Ten Three-Line Hybrid Rice Combinations for Semilate Rice + Ratoon Rice Varieties
Abstract: This study was to select rice varieties adaptive to the semilate rice + ratoon rice production. The first rice crop at early growing stage was field-managed as same as semilate crop rice, fertilized once for sprout growth about 15 d after heading, manual-harvested in time with 30 cm-high stubble left and threshers out of fields for rice stubble protection at over 90% of yellow mature grains and 70% of the rice plants' second and third node sprouts which elongated to 2 to 3 cm, and fertilized once again 3 to 5 d after harvesting. The results indicate that the ratoon rice yield of a variety WZ-8 is 407.8 kg/667m2, and its semilate rice + ratoon rice yield is 1186.9 kg/667m2, both of which are the highest each in the test; and followed by WZ-4, its semilate rice yield and ratoon rice yield are more than 600 kg/667m2 and 300 kg/667m2,respectively, and its total yield reaches 986.0 kg/667m2. The semilate rice, ratoon rice or semilate rice + ratoon rice yield of the WZ-8 is the highest, with a higher potential of semilate rice + ratoon rice production; and WZ-4 can also be used as a semilate rice + ratoon rice variety in Wanzhou region.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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