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近年我省水稻在大面积上亩产千斤已是多见。如何进一步提高单产,也已积累了不少经验。在贯彻各种联产责任制之后,我省水稻进一步高产所遇到的理论问题很多。兹分五个方面讨论如下: 一、水稻的个体和群体都是一个高度的自动调节系统水稻的个体是具有自动调节的性能。例如秧田播种最大了,秧田的分蘖就少;田里水少了,根就往下扎;每穴秧苗插的多发的就慢,插少一点发的就快;穗少就穗大,穗多就穗小。这些都是人们容易观察到的。但水稻的产量是群体的产量。各地水稻高产实践证明:只有健壮的个体所组成的群体才是高产的群体。高产之所以必须早播稀播和早插稀插,道理就在这里。肥多肥少,水多水少以及过密和徒长都不利,道理也在此。这是因为水稻群体也是一个高度的自动调节系统。最常见的现象是在源、库、流不协调之下,植株
In recent years, rice production in our province has been more common on a large area. How to further improve yields, but also has accumulated a lot of experience. After carrying out various joint responsibility systems, there are many theoretical problems encountered in further rice production in our province. It is divided into five aspects discussed as follows: First, the rice individuals and groups are a high degree of automatic regulation system Rice individuals are self-regulating performance. For example, sowing the largest seedling, seedling tiller less; field less water, the root bar down; per hole seedling inserted more slowly, plug less hair faster; The ear is small. These are easily observed by people. However, the output of rice is the output of the group. High yield of rice in various places has proved that only the group of robust individuals is the high-yielding group. The reason for the high yield must be early broadcast thinning and thinning inserted early, the truth is here. Fewer and more fat and less water juicy and superficial and unfavorable, the truth is here. This is because the rice population is also a high degree of automatic regulation system. The most common phenomenon is in the source, library, flow inconsistent plants