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小麦密窝点播能保证播种均匀,出苗整齐,较好的统一群体和个体的矛盾。平塘地区在五十年代,小麦以点播为主,但由于窝距过大,每亩播种密度不到六千窝,有效穗不足十万,产量很低,以致逐渐被条播代替。条播密植虽能增加基本苗,获得较高的有效穗,但有效穗超过25万/亩时,穗部性状变劣,容易倒伏、产量降低。因此,在借鑑四川、浙江等地的验经基础上,进行了密窝点播的初步尝试。一、试验概况试验于1980和1981年秋播进行。试验地前作为水稻,肥力中等,试验品种为肯贵阿各次试验都分别设有条播为对照(见表一)。
On-demand wheat sow to ensure uniform sowing, emergence neat, better unity of the contradictions between groups and individuals. In the 1950s, wheat was mainly on-demand in Pingtang area. However, due to the large nest spacing, the planting density per mu was less than 6,000 litters, the effective spike was less than 100,000 and the yield was very low, so that it was gradually replaced by seedlings. Sowing dense planting can increase the basic seedlings, access to a higher effective panicle, but more than 250,000 effective panicle / mu, the ear traits worse, prone to lodging, production decreased. Therefore, based on the experience of Sichuan and Zhejiang, we conducted a preliminary attempt to secret-on-demand. First, the test profile Test in the autumn of 1980 and 1981 broadcast. Before the experiment as a rice, medium fertility, the test varieties are willing to expensive each test were broadcast as a control (see Table 1).