Effects of sowing date and foliar fertilizer on yield,appearance and processing quality of'Luliangyoujingling'
In order to explore the effects of foliar fertilizer on the yield and quality of direct seeding hybrid rice under different sowing dates in the hilly area of northwest Sichuan.'Luliangyoujingling'hybrid rice was used as the experimental material,and a two-factor split-plot design was adopted.The main plots were sowing dates on May 16(SD1),May 23(SD2),and May 30(SD3).The sub-area was foliar fertilizer,no foliar fertilizer(T1)and foliar fertilizer(T2).The changes of yield components,appearance quality and processing quality were analyzed.The results showed that under SD1,compared with T1,the effective panicle number,grain number per panicle,seed setting rate and 1 000-grain weight of'Luliangyoujingling'treated with T2 increased by 1.66％,3.38％,2.11％and 0.55％,respectively,and under SD2,it increased by 1.44％,4.20％,2.29％and 0.95％respectively,and increased by 2.00％,4.49％,4.16％and 1.32％under SD3,respectively.Compared with T1,under the three sowing dates of SD1,SD2 and SD3,the yield of'Luliangyoujingling'treated with T2 increased by 7.83％,8.70％and 12.14％respectively,and the difference was significant.The chalkiness decreased by 3.45％,6.25％and 8.11％respectively,and the chalky grain rate decreased by 4.17％,5.51％and 5.19％respectively.The yield of spraying foliar fertilizer under SD1 was the highest,and its yield was 10.74 kg/hm2,but the difference was not significant compared with SD2.Under SD2,the processing quality and appearance quality of direct seeding rice with foliar fertilizer were better,and it was appropriate to sow hybrid rice under SD2 in the hilly area of northwest Sichuan.The results of this study can provide a theoretical basis for the selection of sowing date of hybrid rice in the hilly area of northwest Sichuan.
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