不同覆膜方式、种植密度对矮秆蓖麻产量的影响

Effects of Film Mulching Methods and Planting Densities on Yield of Dwarf Castor

试验以矮秆蓖麻杂交种aLmAB_8×CSR181为研究材料,以全膜覆盖、半膜覆盖、膜下滴灌种植为主因素,以3.8万株/hm^2,2.7万株/hm^2,2.2万株/hm^2三个密度为副因素的裂区试验设计,研究了不同覆膜方式、种植密度对矮秆蓖麻产量及产量性状的影响.结果表明,全膜覆盖、膜下滴灌、半膜覆盖平均产量分别为3350.07 kg/hm^2,3168.24 kg/hm^2,2971.35 kg/hm^2,覆膜方式间差异达到了极显著水平;种植密度在2.7万株/hm^2水平下的平均产量最为突出,为3310.85 kg/hm^2,2.2万株/hm^2水平下的平均产量为3147.48 kg/hm^2,3.8万株/hm^2水平下的平均产量为3031.33 kg/hm^2,3种种植密度下蓖麻的产量差异也达到了极显著水平;矮秆蓖麻杂交种aLmAB_8×CSR181在采取全膜覆盖、种植密度为2.7万株/hm^2水平下的产量最高,为3529.80 kg/hm^2.

The effects of film mulching methods and planting densities on yield and yield characters of dwarf castor hybrid aLmAB_8×CSR181 were studied. Treatments included three main types of full film coverage, half film coverage, and drip irrigation under the film and, planting densities of either 38,000, 27,000 or 22,000 plants/hm^2 were used.The average yields of the full film coverage, half film coverage and drip irrigation under the film were 3350.07,3168.24 and 2971.35 kg/hm^2, respectively. The differences among these were very significant. The average yield at planting density of 27,000 plants/hm^2 was the most prominent, with a yield of 3310.85 kg/hm^2. The average yield at 22 000 and 38 000 plants/hm^2 were 3147.48 and 3031.33 kg/hm^2. The yield differences of castor under the three planting densities also reached a very significant level. The yield of aLmAB_8×CSR181 in full film coverage and in the planting density of 27 000 plants/hm^2 was 3529.80 kg/hm^2, which was the highest.