不同收割时期和密度对水稻再生及其产量的影响

Effeets of Different Harvesting Period and Planting Density on Growth and Yield of Ratooning Rice

为了进一步提高稻米的品质,充分利用收割的头季水稻做饲料,提升水稻的价值,在贵州省兴义市采用优质稻宜香2115进行了在不同的栽插规格、不同的收割时期对再生产量和收割产量影响的比较试验。结果表明,4个收割期在2种密度组合种植中,以“4寸×7寸+T2收割期”组合下,水稻的收割饲料达到2.42kg/m^2和0.50kg/m^2的鲜重和干重,产量达到284.68kg/667m^2,与其他密度和收割期相比总产量高。因此,4寸×7寸的栽培规格下T2(分蘖高峰期)做饲料收割最适合兴义市优质稻再生和收割产量的提高。

In order to improve quality and make the best of main croop rice as feed,the aim of this study was to access the effect of different harvesting period and planting density on the yield and rice ratooning property of appropriate sweet 2115 in Xingyi,Guizhou provincet.The results showed that among the 4 harvest periods at the 2 densities,the combined feed yield of density 4×7(the bunch distance between was 3.33 cm)×T 2 was the highest of 2.42 kg/m^2 FM and 0.50 kg/m^2 DM,and the yield have 284.68 kg/667 m^2.It's higher than others.Therefore,T 2 is recommended as the preferential variety in Xingyi rice production with the planting density of 4×7.