油菜新品种创中度盐碱地单产纪录

Core Viewpoint - The new rapeseed variety "Zhongyouza 501" developed by the Chinese Academy of Agricultural Sciences has set a record for oilseed yield in moderately saline-alkaline soil, demonstrating strong drought and salt-alkali resistance, which is crucial for agricultural productivity in challenging conditions [1][2]. Group 1: Agricultural Innovation - "Zhongyouza 501" is the only significant achievement in the field of biological breeding for rapeseed in China, developed over ten years, featuring traits such as high yield, high oil content, and resistance to salt-alkali and diseases [2]. - The variety maintains high photosynthetic efficiency under drought and saline-alkaline stress conditions, utilizing a planting density of over 30,000 plants per acre to enhance water and fertilizer efficiency [2]. Group 2: Performance and Impact - In a demonstration field in Shaanxi, "Zhongyouza 501" achieved a mechanical harvest yield of 312.23 kg per mu (approximately 0.067 acres) despite adverse conditions, with soil salinity reduced by 20% compared to surrounding areas [1]. - The variety has set high yield records in multiple provinces, including 302.11 kg per mu in Hubei and an average of 377.68 kg per mu in Jiangsu, establishing new benchmarks for winter rapeseed production in China [2].