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刈叶制度是否合理,关系到杂种11648能否高产稳产的问题.生产实践证明:开刈过早、过迟或强度过大,对麻株的生长发育和纤维的产量质量均有不良影响.合理刈叶就是要做到开刈适时,刈叶周期和刈叶强度适宜,使麻株体内养分能够相对平衡,能够正常生长发育,能够稳产高产.什么时候开刈才算适时呢?总的来说,应根据叶片生长发育规律掌握在叶片较长,纤维率较高,拉力较强,既有一定产量,又能保证麻株正常生长发育的适当时机开刈.根据试验数据和生产实践经验,高产麻园一般在植后两周年,长叶一百片,叶长一米左右开刈为宜.开刈过早,麻株长不大,叶片短,产量低,质量差.开刈过迟,产叶数减少,枯叶多,产量也不高.我省的杂种11648在正常管理下植后两周年开割看来是适时的.
Whether the mowing system is reasonable or not is related to whether the hybrid 11648 can yield high and stable yield.Production practice has proved that: mowing the mowing too early, too late or excessive strength have adverse effects on the growth and fiber yield and quality of the hemp. Mowing is to achieve the right time to open mowing, mowing cycle and mowing intensity is appropriate, so that the nurse plant nutrients can be relatively balanced, to the normal growth and development, able to stable and high yield .When open mowing is considered timely? , According to the law of growth and development of leaves should grasp the leaves in a longer, higher fiber rate, stronger pull, both a certain yield, but also to ensure the normal growth and development of hemp plants open the appropriate time to mow.According to the experimental data and production experience, high yield Ma garden is generally the second anniversary of the planting, the long leaves of a hundred, leaf length of about a multivariate mowing appropriate. Mowing premature, hemp grows long, short leaves, low yield, poor quality. Crawling too late, Reduced number of leaves, more dead leaves, the yield is not high.Immature 11648 in our province under the management of the second anniversary of the plantation under the normal cut appears to be timely.