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赣化2号是我地目前杂交优势特强的一个组合。一般亩产1,200斤左右,比常规中稻增产30%左右,高产田块可达1,500斤以上,是我地较好的一个麦茬中稻组合。但1979年以来,种植面积仍只占中稻面积的30—40%,其原因主要是:制种产量低,杂株率高,秧田去杂不及时,造成大田栽插基本茎蘖苗不足,而导致产量不高,严重时还影响到布局的稳定。为寻求解决途径,除提高制种技术、增加制种产量和提高纯度外,1983年以来,我们从提高种子利用率入手,进行了赣化2号的剥蘗分株优势利用的试验。两年的实践表明:赣化2号在苗数不足的情况下,通过早去杂,
Jiangxi No. 2 is my current cross-hybrid advantage of a combination. Generally about 1,200 pounds per mu, about 30% more than normal medium-sized rice, high-yield plots up to 1,500 pounds or more, is one of my better wheat stubble medium-sized rice combination. However, since 1979, the acreage still accounts for only 30-40% of the area of middle rice. The main reasons are: low seed yield, high heterosis rate, lack of timely access to hybrid seedlings, resulting in shortage of basic stems and tillers in field planting Lead to low output, serious impact on the stability of the layout. In order to find a solution to the problem, in addition to improving the seed production technology, increasing the seed production and increasing the purity, we started from 1983 to improve the seed utilization rate, and carried out the experiment on the superior utilization of the tillering ramets of Jiangxi 2. Two years of practice shows that: No. 2 in Jiangxi Province in the case of insufficient seedlings, go through miscellaneous early,