不同叶龄移栽对水稻产量及品质的影响

通过叶龄移栽试验结果分析表明,水稻在3～8叶之间移栽,以4叶处理产量最高,达10374kg/hm2,比8叶期移栽增产11.0%,方差分析结果,3～6叶之间处理产量差异不显著,但均比8叶期移栽显著增产;根据稻米检验结果,垩白率、垩白度受移栽叶龄影响较大,适宜叶龄移栽能显著降低垩白率和垩白度.采取中苗移栽能使糙米率、精米率,整精米率及蛋白质的含量提高,直链淀粉降低,有利于产量的提高和稻米品质的改善.

Effect of Different Transplanting Seedling Ages on Grain Yield and its Quality

The result of field experiment by means of transplanting seedling ages showed that rice seedlings were transplanted from 3 to 8 seedling ages, among which 4 seedling age treatment can obtain the highest grain yield: 10374kg/hm2 , its grain yield is 11 percent higher than the treatment of 8 seedling age. According to the results of analysis variance, the difference among 3~6 seedling age''s treatments isn''t distinct, while their grain yields of all of these treatment are evidently higher than the treatment of 8-seedling age. The data of the grain quality test indicated chalky grain rate, chalkiness are greatly influenced by transplanting seedling ages, however appropriate transplanting seedling ages can remarkably decrease chalky grain rate, chalkiness. The brown rice, milled rice, head rice and protein content can be increased while amylase can be lowered if seedlings were transplanted at appropriate ages which is also beneficial to boost grain yield and improve grain quality.