中文摘要：

为了探讨播期及秸秆覆盖保护对加工番茄干物质积累和产量形成的影响。于2009-2010年以里格尔87-5为材料进行了播期（4月10日、4月25日、5月10日和5月20日）的试验。结果表明：在北疆气候条件下播期对加工番茄的干物质积累和产量都有显著的影响。随着播期的推迟植株总干物质积累量呈显著下降趋势,其原因是播期导致干物质积累速率降低和持续时间缩短。移栽和直播产量均以4月25日最高,分别为227.7和184.2t/hm2,显著高于其他播期。在产量构成因子方面,播期推迟使得单株有效结果数显著降低,对平均单果重影响不大。

英文摘要：

To explore the effect of sowing date and straw mulching on dry matter accumulation and yield of processing tomato,the authors carried out field experiments in Shihezi university（86°01′E,44°26′N） in two seasons 2009 and 2010.with the processing tomato cultivar ＇Liger 87-5＇ as materials,the effect of sowing dates（10 and 25 Apr,10 and 20 May） treatments were studied.The results showed that sowing date greatly influenced dry matter accumulation and yield of processing tomato under northern Xingjiang climatic condition.With the delay of sowing date,the total dry matter accumulation decreased significantly.The highest yields of both transplanting and direct-seeding were recorded in 25 April sowing,227.7 and 184.2 t/hm2 respectively,significantly higher than in other sowing.Among the yield component factors,the delay of sowing date decreased significantly the number of individual plant valid fruits,but affected little the average single fruit weight.