种肥用量对免耕半固态直播稻产量构成与稻米品质的影响

Effects of Seed Fertilization Level on the Yield and Grain Quality of Semisolid State Direct Seeding Rice with No-tillage

2015年在浏阳北盛设计水稻免耕半固态直播与传统翻耕直播的大田对比试验,研究半固态播种基质不同复合肥添加量对水稻产量及稻米品质的影响,并筛选出免耕半固态直播最佳种肥用量。结果表明,与传统翻耕直播相比,免耕半固态直播在适当减少复合肥和氮肥的用量时,产量显著增加,且不同种肥用量处理间的产量随着种肥用量的增加呈先增加后减少的趋势,以基质复合肥和稀泥配比为0.8∶100、种肥用量为62.53 kg/hm^2时增产效果最佳。免耕半固态直播虽有利于水稻产量的增加,但在一定程度上会降低精米率;在基质复合肥和稀泥配比为0.7∶100、种肥用量57.72 kg/hm^2时会降低稻米的蛋白质含量;免耕半固态直播稻不同种肥用量处理间的稻米品质各指标差异都不显著。

A field experiment was conducted to study the effects of seed fertilization level on the yield and /rain quality ofsemisolid state direct seeding rice with no - tillage, and screen out the optimum seed fertilizer level. Data showed that the yield of semisolid state direct seeding rice with no - tillage was decreased when the application of compound fertilizer and nitrogen fertilizer was reduced at suitable amount. Compared with traditional tillage direct seeding, the yielstate direct seeding rice with no - tillage showed a trend of increased at the first and decreased afterward as the increasingof seed fertilizer amount. The best effect was observed when the seed fertilizer at the rate of 62. 53 kg/hm2, with matrix compound fertilizer and slime ratio of 0. 8- 100. Semisolid state direct seeding with no - tillage was beneficial to the in-crease of rice yield, but it will reduce the milled rice rate to a certain extent when comseding. The rice protein content was reduced when the sed fertilizer was 57. 72 kg/hm2 ,and the matrix compound fertiliz-er and slime ratio was 0. 7- 100. There were no significant differences in the indexes of rice quality among different treat-ments of seed fertilizer application.