旱涝频发及不同栽培方式下水稻的生长响应

为有效应对水稻生产过程中频发的旱涝状态,在自然旱涝反复发生的情况下,研究不同栽培方式(干旱育秧宽窄行移栽、干旱育秧地膜覆盖移栽、湿润育秧宽窄行移栽和湿润育秧地膜覆盖移栽)水稻关键生长期根系、叶片、株高、分蘖数及穗长的差异。结果表明:地膜覆盖处理水稻的根、茎、叶、分蘖数及穗长等形态特征最好,干旱育秧宽窄行移栽水稻形态生长情况较差。地膜移栽处理有利于水稻适应频发的旱涝状态。

Response of Rice Growth to Frequent Occurrence of Drought and Flood and Different Cultivation Patterns

In order to deal with frequent occurrence of drought and flood effectively in the process of rice production, in the case of frequent occurrence of drought and flood, the difference of root system, leaf blades, plant height, number of tillers and ear length in the crucial growth period of rice with various cultivation patterns, including drought seedlings with wide-and narrow-row rice transplanting, drought seedling transplanting with plastic film mulching, moist seedlings with wide-and narrow-row rice transplanting and moist seedlings transplanting with plastic film mulching cultivation.Results: Growth of rice root, stem, leaf, tillers and ear length under plastic film mulching is superior to no plastic film mulching, and the growth status of rice form under drought seedlings with wide-and narrow-row rice transplanting is worse.Consequently, the way of plastic film mulching is in favor of the rice adapt to frequent drought and flood state.