摘要
采用稻草还田免耕直播、稻草还田翻耕直播、非稻草还田免耕直播和非稻草还田翻耕直播4种耕作方式,探讨其对水稻生长发育的影响效应。结果表明,稻草还田免耕直播的水稻出苗率、低位分蘖发生率、成熟期绿叶数均为最高,分别达94.98%、93.20%和2.7张叶;无倒伏现象。稻草还田和免耕直播对水稻出苗率、低位分蘖发生率、成熟期绿叶数的单效应均为正效应,表现为促进作用,并达到极显著水平;对倒伏率的单效应为负效应,表现为抑制作用。稻草还田与免耕直播配合,对水稻出苗率、低位分蘖发生率、成熟期绿叶数的交互作用也表现正效应,而对倒伏率表现负效应。
Four different plowing methods, straw returning to field with plowing-free and direct sowing, straw returning to field with normal plowing,plowing-free and direct sowing on the field without straw returned, normal plowing and direct sowing on the field without straw returned, were used in this paper to explore their effect on rice growth and development. The result indicated that the treat of direct sowing and straw returning to field with plowing-free was the best. The rate of seedlings emergence, low rank tiller rate, green leaf number in mature period and the lodging rate and the number is respectively 94.98% ,93.2% ,2.7 leaves and 0 respectively. Straw returning to field and plowing-free and direct sowing could remarkably increase the rice rate of seedlings emergence, low rank tiller formation rate, mature period green leaf number and reduce the lodging rate.
出处
《湖北农业科学》
北大核心
2008年第3期270-273,共4页
Hubei Agricultural Sciences
基金
广西农业职业技术学院专业带头人专项经费资助
关键词
稻草还田
免耕直播
生长发育
效应
straw returning to field
plowing-free and direct sowing
growth and development
effects
