新宾地区水稻施用氮素穗肥对产量的影响

连续2 a对新宾地区水稻施用穗肥的适宜施用时期及施用数量进行研究,结果表明,水稻施用穗肥确实有防止颖花退化,增加每穗粒数的作用,可增加实粒数3.1～6.6粒/穗。水稻穗肥的适宜施用时期为水稻主茎幼穗长1.0～5.5 mm,水稻穗肥的适宜施用量为硫酸铵7.5～10.0 kg/667 m2。在施足农家肥水稻长势良好的条件下...

The Effect of N-Panicle Fertilizer on Grain Yield in Xinbin

The optimal period and amount of panicle fertilizer were researched in Xinbin for 2 straight years,the results indicated that panicle fertilizer can prevent spikelet retrogression and increase the number of grains per ear which from 3.1 to 6.6.When the length of young panicle of main stem was from 1.0 to 5.5 mm,it was the optimal period to use panicle fertilizer,and the best amounts of ammonium sulfate was 7.5～10.0 kg/667 m2.Under the conditions of enough farm manure and the well grown rice,we can play little panicle fertilizer,or else should be more appropriate panicle fertilizer,and it can play little or no fertilizer for low temperature and pluvial damages.