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随着农业科学技术高速发展,农业生产科技含量的增加,品种更新更换速度的加快,怎样选好品种成为当今首要课题。现在农业生产尤其对新品种、高产品种的渴求日益迫切,正因如此,品种选择上存在着极大的盲目性,缺乏科学性。只重品种产量和熟期,而忽视了品种其他特性,甚至有的越区种植,品种自身虽有增产潜力,但生态条件满足不了品种之需,在生产上表现出贪青、晚熟、早衰等现象,使得高产品种不高产,品质下降,阻碍品种推广应用。因此在选择品种时,
With the rapid development of agricultural science and technology, scientific and technological content of agricultural production increased, the replacement of varieties to speed up the speed, how to choose a good variety has become the primary task. Nowadays, the thirst for agricultural production, especially for new varieties and high-yielding varieties, is increasingly urgent. For this reason, there is a great blindness in the selection of varieties and lack of scientific character. Only the varieties of yield and maturity, while ignoring the variety of other characteristics, and even some of the more area planting, although the yield potential of varieties themselves, but the ecological conditions can not meet the needs of varieties in the production of greedy, late maturity, premature aging, etc. Phenomenon, making high-yielding varieties are not high yield, quality decline, hinder the promotion of varieties. Therefore, when selecting varieties,