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早季在田间用管栽试验对免耕水稻和常耕水稻的分蘖发生、成穗和结实特性进行了比较。结果表明,免耕水稻分蘖发生和成穗数分别比常耕水稻多8.12%和6.40%,分蘖优势明显。免耕水稻的分蘖优势主要表现在低位优势,其3~5节位分蘖发生数、分蘖成穗数及籽粒产量均比常耕水稻的高,其3~5节位单株一次分蘖发生数、成穗数及籽粒产量的增加量分别占全部节位单株一次分蘖数、成穗数及籽粒产量的增加量的75.00%,155.56%和146.91%。
Early in the field with tube plant experiments on no-tillage rice and paddy rice tillering, ear and ear characteristics were compared. The results showed that the tillering and spike number of no-tillage rice were 8.12% and 6.40% more than that of the non-tillage rice, respectively. The tillering advantage was obvious. The tillering advantage of no-tillage rice was mainly low, with 3 to 5 nodes tillering number, tillering spike number and grain yield higher than that of non-tillage rice, The number of spikes and the increase of grain yield accounted for 75.00%, 155.56% and 146.91% of the increment of the number of tillers, spikelets and grain yield of all node plants.