论文部分内容阅读
水稻生长前期施氮量与单株分桑数的正相关极显著、与单株有效分美数的正相关显著．前期施氮水平高，则分前终止期延迟施氮水平对分醒始期的影响甚微分率是否有效，决定于分率抽出的时间，与施氮量无关前期施氮可以改善有效分美的稳粒性状，但随着施氮量的增加，分集中后期的无效分迅数显增加，分薛成穗率下降
There was a significant positive correlation between the amount of nitrogen applied at the early stage of rice growth and the number of mulberry per plant and positive correlation with the number of mulberry per plant effectively. The high nitrogen level in the early stage, then the late termination of pre-termination of nitrogen level on the re-start period of the differential rate is valid, depending on the rate of extraction time has nothing to do with the amount of nitrogen application of nitrogen can improve the effective sub-US steady However, with the increase of nitrogen application rate, the number of ineffective fractions increased significantly in the late period of diversity,