不同栽培模式对水稻生长发育及产量的影响

为了寻求超高产水稻的栽培模式,以覆膜厢畦式、厢畦式、常规三种栽培模式为研究对象,对不同模式水稻的根重及白根数、SPAD值、光合强度等生理指标和产量进行系统的比较研究。结果表明:在这几项生理指标上,覆膜厢畦式栽培要显著高于厢畦式栽培,厢畦式栽培显著高于常规栽培。特别在完熟期,与厢畦式、常规栽培相比,覆膜厢畦式栽培总根量分别增加11.5%和33.3%;白根数是其3.1倍和17.0倍;SPAD值高7.7%和67.4%;光合速率增加45.6%和62.3%。在水稻超高产模式创建方面,覆膜厢畦式优势明显。

Effects of Different Cultivation Patterns on Growth and Yield of Rice

In order to find out the cultivation pattern for high-yielding rice,the differences of root weight,white root number,chlorophyll SPAD value,photosynthetic rate and yield were compared among the cultivation patterns of film-mulching ridge furrow,ridge furrow and conventional pattern.The results showed that the values of these indexes were the best under the film-mulching ridge furrow pattern,and then under the ridge furrow pattern;they were the worst under the conventional pattern.Especially in the post-ripening period,under the film-mulching ridge furrow pattern,the total root quantity increased by 11.5% and 33%,the SPAD value increased by 7.7% and 67.4% and the photosynthesis rate increased by 45.6% and 62.3% respectively compared to the ridge furrow and conventional patterns,and the white root number was 3.1 and 17 times of the others’respectively.So the film-mulching ridge furrow was the best model for high-yielding rice cultivation.