桂春8号间作和夏繁播期试验

Sowing time of Guichun 8 for intercropping and summer propagation

【目的】研究桂春8号在不同地区间作条件下适宜的间作播期和夏繁时间，为广西大豆生产及大豆间套种提供参考。【方法】2011年以桂春8号为试材，在广西武宣县、武鸣县和都安县进行播期试验。【结果】在不影响间作主体作物的条件下，武宣县3月中上旬播种大豆产量为1459．5～1597．5kg／ha；武鸣县2中旬～3月下旬播种大豆产量为2476．5～2877．5kg／ha；都安县2月初一3月上旬播种大豆产量为2262．0～2499．0kg／ha，6月上旬～7月上旬为2122．5～2409．0kg／ha。【结论】在间作条件下，桂春8号在武宣县适宜的播期为3月中上旬；在武鸣县适宜的播种期为2月中旬。3月下旬；在都安县适宜的播期为2月初～3月上旬，夏繁适宜的播期为6月上甸-7月上旬，且在适宜的播期内可适时早播。

[Objective]The present experiment was conducted to study the suitable sowing time of Guichun 8 for intercropping and summer propagation in different soybean production areas of Guangxi to provide references on its production. [Method]In 2011, Guichun 8 was sowed and investigated in three counties of Guangxi viz., Wuxuan, Du＇an and Wuming. [Result]Based on not affecting main crops, the yield of soybean was 1459.5-1597.5 kg/ha sown in early and mid March in Wuxuan, 2476.5-2877.5 kg/ha sown in mid February to late March in Wuming, 2262.0-2499.0 kg/ha sown in early February to early March, and 2122.5-2409.0 kg/ha sown in early June to early July in Du＇an. [Conclusion]Under intercropping condition, the suitable sowing time of Guichun 8 in Wuxuan was from early March to mid March, and in Wuming was from mid February to late March. In Du＇an, the suitable sowing time for intercropping was from early February to early March, while for summer reproduction was from early June to early July; moreover, early sowing was conducive during the proper sowing period.